CVE-2025-14847 (GCVE-0-2025-14847)

Vulnerability from cvelistv5 – Published: 2025-12-19 11:00 – Updated: 2026-02-26 16:07
VLAI CISA Previdian
Title
Zlib compressed protocol header length confusion may allow memory read
Summary
Mismatched length fields in Zlib compressed protocol headers may allow a read of uninitialized heap memory by an unauthenticated client. This issue affects all MongoDB Server v7.0 prior to 7.0.28 versions, MongoDB Server v8.0 versions prior to 8.0.17, MongoDB Server v8.2 versions prior to 8.2.3, MongoDB Server v6.0 versions prior to 6.0.27, MongoDB Server v5.0 versions prior to 5.0.32, MongoDB Server v4.4 versions prior to 4.4.30, MongoDB Server v4.2 versions greater than or equal to 4.2.0, MongoDB Server v4.0 versions greater than or equal to 4.0.0, and MongoDB Server v3.6 versions greater than or equal to 3.6.0.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: active Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-30 04:55 UTC
CWE
  • CWE-130 - Improper Handling of Length Parameter Inconsistency
Assigner
mongodb CNA under the mitre root
CNA scorecard C 70/100 over 262 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
MongoDB Inc. MongoDB Server Affected: 8.2 , < 8.2.3 (custom)
Affected: 8.0 , < 8.0.17 (custom)
Affected: 7.0 , < 7.0.28 (custom)
Affected: 6.0 , < 6.0.27 (custom)
Affected: 5.0 , < 5.0.32 (custom)
Affected: 4.4 , < 4.4.30 (custom)
Affected: 4.2 (custom)
Affected: 4.0 (custom)
Affected: 3.6 (custom)
guessed Create a notification for this product.
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 9cf8053e-b35b-43f6-a8a7-07455652753d

Vulnerability ID: CVE-2025-14847

Status: Confirmed

Status Updated: 2025-12-29 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2025-12-29
Asserted: 2025-12-29
Scope
Notes: MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency Vulnerability | Affected: MongoDB / MongoDB and MongoDB Server | Description: MongoDB Server contains an improper handling of length parameter inconsistency vulnerability in Zlib compressed protocol headers. This vulnerability may allow a read of uninitialized heap memory by an unauthenticated client. | Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Due date: 2026-01-19 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://jira.mongodb.org/browse/SERVER-115508 ; https://nvd.nist.gov/vuln/detail/CVE-2025-14847
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-130
Feed CISA Known Exploited Vulnerabilities Catalog
Product MongoDB and MongoDB Server
Due Date 2026-01-19
Date Added 2025-12-29
Vendorproject MongoDB
Vulnerabilityname MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 12:25 UTC | Updated: 2026-11-04 13:37 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 5a1ec984-a56c-4061-a909-517278565500

Vulnerability ID: CVE-2025-14847

Status: Confirmed

Status Updated: 2026-06-01 10:47 UTC

Exploited: Yes

Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: KEVIntel entry: Zlib compressed protocol header length confusion may allow memory read | Affected: MongoDB Inc. / MongoDB Server | CVSS: 8.7 (HIGH) | EPSS: 0.83007 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Zlib compressed protocol header length confusion may allow memory read
Vendor MongoDB Inc.
Product MongoDB Server
Added Date 2026-06-01T10:47:16.660Z
Cvss Score 8.7
Epss Score 0.83007
Cvss Severity HIGH
Epss Percentile 0.99633
Used In Malware unknown
Ahead Of Cisa Kev 
{
  "count": 1,
  "unit": "day"
}
Not Yet In Cisa Kev False
References
Created: 2026-06-23 14:03 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-14847",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-30T04:55:27.463830Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2025-12-29",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-14847"
              },
              "type": "kev"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-26T16:07:25.054Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-14847"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2026-01-12T16:53:51.797Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/12/29/21"
          },
          {
            "url": "https://www.vicarius.io/vsociety/posts/cve-2025-14847-detection-script-heap-memory-exposure-in-mongodb-server"
          },
          {
            "url": "https://www.vicarius.io/vsociety/posts/cve-2025-14847-mitigation-script-heap-memory-exposure-in-mongodb-server"
          },
          {
            "url": "https://www.smartkeyss.com/post/mongobleed-pre-auth-memory-disclosure-via-op_compressed-in-mongodb-cve-2025-14847"
          }
        ],
        "title": "CVE Program Container",
        "x_generator": {
          "engine": "ADPogram 0.0.1"
        }
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "MongoDB Server",
          "vendor": "MongoDB Inc.",
          "versions": [
            {
              "lessThan": "8.2.3",
              "status": "affected",
              "version": "8.2",
              "versionType": "custom"
            },
            {
              "lessThan": "8.0.17",
              "status": "affected",
              "version": "8.0",
              "versionType": "custom"
            },
            {
              "lessThan": "7.0.28",
              "status": "affected",
              "version": "7.0",
              "versionType": "custom"
            },
            {
              "lessThan": "6.0.27",
              "status": "affected",
              "version": "6.0",
              "versionType": "custom"
            },
            {
              "lessThan": "5.0.32",
              "status": "affected",
              "version": "5.0",
              "versionType": "custom"
            },
            {
              "lessThan": "4.4.30",
              "status": "affected",
              "version": "4.4",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "4.2",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "4.0",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "3.6",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003eMismatched length fields in Zlib compressed protocol headers may allow a read of uninitialized heap memory by an unauthenticated client. This issue affects all MongoDB Server v7.0 prior to 7.0.28 versions, MongoDB Server v8.0 versions prior to 8.0.17, MongoDB Server v8.2 versions prior to 8.2.3, MongoDB Server v6.0 versions prior to 6.0.27, MongoDB Server v5.0 versions prior to 5.0.32, MongoDB Server v4.4 versions prior to 4.4.30, MongoDB Server v4.2 versions greater than or equal to 4.2.0, MongoDB Server v4.0 versions greater than or equal to 4.0.0, and MongoDB Server v3.6 versions greater than or equal to 3.6.0.\u003c/span\u003e\u003c/p\u003e"
            }
          ],
          "value": "Mismatched length fields in Zlib compressed protocol headers may allow a read of uninitialized heap memory by an unauthenticated client. This issue affects all MongoDB Server v7.0 prior to 7.0.28 versions, MongoDB Server v8.0 versions prior to 8.0.17, MongoDB Server v8.2 versions prior to 8.2.3, MongoDB Server v6.0 versions prior to 6.0.27, MongoDB Server v5.0 versions prior to 5.0.32, MongoDB Server v4.4 versions prior to 4.4.30, MongoDB Server v4.2 versions greater than or equal to 4.2.0, MongoDB Server v4.0 versions greater than or equal to 4.0.0, and MongoDB Server v3.6 versions greater than or equal to 3.6.0."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-130",
              "description": "CWE-130: Improper Handling of Length Parameter Inconsistency",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-19T11:00:22.465Z",
        "orgId": "a39b4221-9bd0-4244-95fc-f3e2e07f1deb",
        "shortName": "mongodb"
      },
      "references": [
        {
          "url": "https://jira.mongodb.org/browse/SERVER-115508"
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "title": "Zlib compressed protocol header length confusion may allow memory read",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a39b4221-9bd0-4244-95fc-f3e2e07f1deb",
    "assignerShortName": "mongodb",
    "cveId": "CVE-2025-14847",
    "datePublished": "2025-12-19T11:00:22.465Z",
    "dateReserved": "2025-12-17T18:56:21.301Z",
    "dateUpdated": "2026-02-26T16:07:25.054Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "cisa_known_exploited": {
      "cveID": "CVE-2025-14847",
      "cwes": [
        "CWE-130"
      ],
      "dateAdded": "2025-12-29",
      "dueDate": "2026-01-19",
      "forensicTriage": "No",
      "knownRansomwareCampaignUse": "Unknown",
      "notes": "This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://jira.mongodb.org/browse/SERVER-115508 ; https://nvd.nist.gov/vuln/detail/CVE-2025-14847",
      "product": "MongoDB and MongoDB Server",
      "requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
      "shortDescription": "MongoDB Server contains an improper handling of length parameter inconsistency vulnerability in Zlib compressed protocol headers. This vulnerability may allow a read of uninitialized heap memory by an unauthenticated client.",
      "vendorProject": "MongoDB",
      "vulnerabilityName": "MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency Vulnerability"
    },
    "epss": {
      "cve": "CVE-2025-14847",
      "date": "2026-11-13",
      "epss": "0.83218",
      "percentile": "0.99684"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "MongoDB Server",
                "vendor": "MongoDB Inc.",
                "versions": [
                  {
                    "lessThan": "8.2.3",
                    "status": "affected",
                    "version": "8.2",
                    "versionType": "custom"
                  },
                  {
                    "lessThan": "8.0.17",
                    "status": "affected",
                    "version": "8.0",
                    "versionType": "custom"
                  },
                  {
                    "lessThan": "7.0.28",
                    "status": "affected",
                    "version": "7.0",
                    "versionType": "custom"
                  },
                  {
                    "lessThan": "6.0.27",
                    "status": "affected",
                    "version": "6.0",
                    "versionType": "custom"
                  },
                  {
                    "lessThan": "5.0.32",
                    "status": "affected",
                    "version": "5.0",
                    "versionType": "custom"
                  },
                  {
                    "lessThan": "4.4.30",
                    "status": "affected",
                    "version": "4.4",
                    "versionType": "custom"
                  },
                  {
                    "status": "affected",
                    "version": "4.2",
                    "versionType": "custom"
                  },
                  {
                    "status": "affected",
                    "version": "4.0",
                    "versionType": "custom"
                  },
                  {
                    "status": "affected",
                    "version": "3.6",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "cna@mongodb.com"
          }
        ],
        "cisaActionDue": "2026-01-19",
        "cisaExploitAdd": "2025-12-29",
        "cisaRequiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
        "cisaVulnerabilityName": "MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency Vulnerability",
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "2FCC5203-4E5E-4B2B-86A1-FD47A097013C",
                    "versionEndExcluding": "4.4.30",
                    "versionStartIncluding": "3.6.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "CCD1EB22-51EA-4ABC-9E0B-99520670133B",
                    "versionEndExcluding": "5.0.32",
                    "versionStartIncluding": "5.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*",
                    "matchCriteriaId": "41ECB5AB-E6D0-412E-802F-839D53076677",
                    "versionEndExcluding": "6.0.27",
                    "versionStartIncluding": "6.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*",
                    "matchCriteriaId": "5C9277BB-90FC-4A57-9028-DD57322F1D44",
                    "versionEndExcluding": "7.0.28",
                    "versionStartIncluding": "7.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*",
                    "matchCriteriaId": "2F4D674D-CBC0-4412-AF68-6FED8A6394C3",
                    "versionEndExcluding": "8.0.17",
                    "versionStartIncluding": "8.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*",
                    "matchCriteriaId": "4302991B-E6CF-4E7B-9B24-BD2355C6F393",
                    "versionEndExcluding": "8.2.3",
                    "versionStartIncluding": "8.2.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Mismatched length fields in Zlib compressed protocol headers may allow a read of uninitialized heap memory by an unauthenticated client. This issue affects all MongoDB Server v7.0 prior to 7.0.28 versions, MongoDB Server v8.0 versions prior to 8.0.17, MongoDB Server v8.2 versions prior to 8.2.3, MongoDB Server v6.0 versions prior to 6.0.27, MongoDB Server v5.0 versions prior to 5.0.32, MongoDB Server v4.4 versions prior to 4.4.30, MongoDB Server v4.2 versions greater than or equal to 4.2.0, MongoDB Server v4.0 versions greater than or equal to 4.0.0, and MongoDB Server v3.6 versions greater than or equal to 3.6.0."
          }
        ],
        "id": "CVE-2025-14847",
        "lastModified": "2026-06-17T08:36:38.717",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "cna@mongodb.com",
              "type": "Secondary"
            }
          ],
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 8.7,
                "baseSeverity": "HIGH",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "NOT_DEFINED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
                "version": "4.0",
                "vulnAvailabilityImpact": "NONE",
                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "NONE",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "source": "cna@mongodb.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2025-14847",
                "options": [
                  {
                    "exploitation": "active"
                  },
                  {
                    "automatable": "yes"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-30T04:55:27.463830Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2025-12-19T11:15:49.277",
        "references": [
          {
            "source": "cna@mongodb.com",
            "tags": [
              "Issue Tracking",
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://jira.mongodb.org/browse/SERVER-115508"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2025/12/29/21"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Technical Description",
              "Third Party Advisory"
            ],
            "url": "https://www.smartkeyss.com/post/mongobleed-pre-auth-memory-disclosure-via-op_compressed-in-mongodb-cve-2025-14847"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Exploit",
              "Third Party Advisory"
            ],
            "url": "https://www.vicarius.io/vsociety/posts/cve-2025-14847-detection-script-heap-memory-exposure-in-mongodb-server"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Exploit",
              "Third Party Advisory"
            ],
            "url": "https://www.vicarius.io/vsociety/posts/cve-2025-14847-mitigation-script-heap-memory-exposure-in-mongodb-server"
          },
          {
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "tags": [
              "Third Party Advisory",
              "US Government Resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-14847"
          }
        ],
        "sourceIdentifier": "cna@mongodb.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-130"
              }
            ],
            "source": "cna@mongodb.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-03-27T08:58:34+00:00",
      "cve": "CVE-2025-14847",
      "id": "CVE-2025-14847",
      "initial_release_date": "2025-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Zlib compressed protocol header length confusion may allow memory read",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-14847.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2026-01-12T16:53:51.797Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "url": "http://www.openwall.com/lists/oss-security/2025/12/29/21"
              },
              {
                "url": "https://www.vicarius.io/vsociety/posts/cve-2025-14847-detection-script-heap-memory-exposure-in-mongodb-server"
              },
              {
                "url": "https://www.vicarius.io/vsociety/posts/cve-2025-14847-mitigation-script-heap-memory-exposure-in-mongodb-server"
              },
              {
                "url": "https://www.smartkeyss.com/post/mongobleed-pre-auth-memory-disclosure-via-op_compressed-in-mongodb-cve-2025-14847"
              }
            ],
            "title": "CVE Program Container",
            "x_generator": {
              "engine": "ADPogram 0.0.1"
            }
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2025-14847",
                    "options": [
                      {
                        "Exploitation": "active"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-12-30T04:55:27.463830Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              },
              {
                "other": {
                  "content": {
                    "dateAdded": "2025-12-29",
                    "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-14847"
                  },
                  "type": "kev"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-12-19T14:04:14.897Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "government-resource"
                ],
                "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-14847"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "MongoDB Server",
              "vendor": "MongoDB Inc.",
              "versions": [
                {
                  "lessThan": "8.2.3",
                  "status": "affected",
                  "version": "8.2",
                  "versionType": "custom"
                },
                {
                  "lessThan": "8.0.17",
                  "status": "affected",
                  "version": "8.0",
                  "versionType": "custom"
                },
                {
                  "lessThan": "7.0.28",
                  "status": "affected",
                  "version": "7.0",
                  "versionType": "custom"
                },
                {
                  "lessThan": "6.0.27",
                  "status": "affected",
                  "version": "6.0",
                  "versionType": "custom"
                },
                {
                  "lessThan": "5.0.32",
                  "status": "affected",
                  "version": "5.0",
                  "versionType": "custom"
                },
                {
                  "lessThan": "4.4.30",
                  "status": "affected",
                  "version": "4.4",
                  "versionType": "custom"
                },
                {
                  "status": "affected",
                  "version": "4.2",
                  "versionType": "custom"
                },
                {
                  "status": "affected",
                  "version": "4.0",
                  "versionType": "custom"
                },
                {
                  "status": "affected",
                  "version": "3.6",
                  "versionType": "custom"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003eMismatched length fields in Zlib compressed protocol headers may allow a read of uninitialized heap memory by an unauthenticated client. This issue affects all MongoDB Server v7.0 prior to 7.0.28 versions, MongoDB Server v8.0 versions prior to 8.0.17, MongoDB Server v8.2 versions prior to 8.2.3, MongoDB Server v6.0 versions prior to 6.0.27, MongoDB Server v5.0 versions prior to 5.0.32, MongoDB Server v4.4 versions prior to 4.4.30, MongoDB Server v4.2 versions greater than or equal to 4.2.0, MongoDB Server v4.0 versions greater than or equal to 4.0.0, and MongoDB Server v3.6 versions greater than or equal to 3.6.0.\u003c/span\u003e\u003c/p\u003e"
                }
              ],
              "value": "Mismatched length fields in Zlib compressed protocol headers may allow a read of uninitialized heap memory by an unauthenticated client. This issue affects all MongoDB Server v7.0 prior to 7.0.28 versions, MongoDB Server v8.0 versions prior to 8.0.17, MongoDB Server v8.2 versions prior to 8.2.3, MongoDB Server v6.0 versions prior to 6.0.27, MongoDB Server v5.0 versions prior to 5.0.32, MongoDB Server v4.4 versions prior to 4.4.30, MongoDB Server v4.2 versions greater than or equal to 4.2.0, MongoDB Server v4.0 versions greater than or equal to 4.0.0, and MongoDB Server v3.6 versions greater than or equal to 3.6.0."
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "baseScore": 8.7,
                "baseSeverity": "HIGH",
                "exploitMaturity": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
                "version": "4.0",
                "vulnAvailabilityImpact": "NONE",
                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "NONE",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            },
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                "version": "3.1"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-130",
                  "description": "CWE-130: Improper Handling of Length Parameter Inconsistency",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-12-19T11:00:22.465Z",
            "orgId": "a39b4221-9bd0-4244-95fc-f3e2e07f1deb",
            "shortName": "mongodb"
          },
          "references": [
            {
              "url": "https://jira.mongodb.org/browse/SERVER-115508"
            }
          ],
          "source": {
            "discovery": "INTERNAL"
          },
          "title": "Zlib compressed protocol header length confusion may allow memory read",
          "x_generator": {
            "engine": "Vulnogram 0.5.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a39b4221-9bd0-4244-95fc-f3e2e07f1deb",
        "assignerShortName": "mongodb",
        "cveId": "CVE-2025-14847",
        "datePublished": "2025-12-19T11:00:22.465Z",
        "dateReserved": "2025-12-17T18:56:21.301Z",
        "dateUpdated": "2026-02-26T16:07:25.054Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.