CVE-2026-41989 (GCVE-0-2026-41989)

Vulnerability from cvelistv5 – Published: 2026-04-23 04:30 – Updated: 2026-04-23 16:22
VLAI
Summary
Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt.
Severity
6.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
gnupg Libgcrypt Affected: 1.8.8 , < 1.10.4 (semver)
Affected: 1.11.0 , < 1.11.3 (semver)
Affected: 1.12.0 , < 1.12.2 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-41989",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-23T15:58:58.277481Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-23T16:22:47.896Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Libgcrypt",
          "vendor": "gnupg",
          "versions": [
            {
              "lessThan": "1.10.4",
              "status": "affected",
              "version": "1.8.8",
              "versionType": "semver"
            },
            {
              "lessThan": "1.11.3",
              "status": "affected",
              "version": "1.11.0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.12.2",
              "status": "affected",
              "version": "1.12.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "1.10.4",
                  "versionStartIncluding": "1.8.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "1.11.3",
                  "versionStartIncluding": "1.11.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "1.12.2",
                  "versionStartIncluding": "1.12.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787 Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-23T05:10:34.992Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://lists.gnupg.org/pipermail/gnupg-announce/2026q2/000503.html"
        },
        {
          "url": "https://dev.gnupg.org/T8211"
        },
        {
          "url": "https://www.openwall.com/lists/oss-security/2026/04/21/1"
        }
      ],
      "x_generator": {
        "engine": "CVE-Request-form 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-41989",
    "datePublished": "2026-04-23T04:30:26.124Z",
    "dateReserved": "2026-04-23T04:30:25.690Z",
    "dateUpdated": "2026-04-23T16:22:47.896Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-41989",
      "date": "2026-06-03",
      "epss": "7e-05",
      "percentile": "0.0058"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-41989\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2026-04-23T05:16:05.750\",\"lastModified\":\"2026-04-27T18:33:18.157\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"cve@mitre.org\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H\",\"baseScore\":6.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.4,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"cve@mitre.org\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.8.8\",\"versionEndExcluding\":\"1.10.4\",\"matchCriteriaId\":\"284D6896-05FC-45E8-8D29-653A20433E9E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.11.0\",\"versionEndExcluding\":\"1.11.3\",\"matchCriteriaId\":\"D47D4091-14A2-4E49-9FFD-3F6C5017A9AC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.12.0\",\"versionEndExcluding\":\"1.12.2\",\"matchCriteriaId\":\"DD6AEDAC-5EDC-4918-877A-A16792DB52A2\"}]}]}],\"references\":[{\"url\":\"https://dev.gnupg.org/T8211\",\"source\":\"cve@mitre.org\",\"tags\":[\"Broken Link\"]},{\"url\":\"https://lists.gnupg.org/pipermail/gnupg-announce/2026q2/000503.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.openwall.com/lists/oss-security/2026/04/21/1\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-41989\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-23T15:58:58.277481Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-04-23T16:08:09.258Z\"}}], \"cna\": {\"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.7, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"gnupg\", \"product\": \"Libgcrypt\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.8.8\", \"lessThan\": \"1.10.4\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"1.11.0\", \"lessThan\": \"1.11.3\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"1.12.0\", \"lessThan\": \"1.12.2\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://lists.gnupg.org/pipermail/gnupg-announce/2026q2/000503.html\"}, {\"url\": \"https://dev.gnupg.org/T8211\"}, {\"url\": \"https://www.openwall.com/lists/oss-security/2026/04/21/1\"}], \"x_generator\": {\"engine\": \"CVE-Request-form 0.0.1\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-787\", \"description\": \"CWE-787 Out-of-bounds Write\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"1.10.4\", \"versionStartIncluding\": \"1.8.8\"}, {\"criteria\": \"cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"1.11.3\", \"versionStartIncluding\": \"1.11.0\"}, {\"criteria\": \"cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"1.12.2\", \"versionStartIncluding\": \"1.12.0\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"shortName\": \"mitre\", \"dateUpdated\": \"2026-04-23T05:10:34.992Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-41989\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-23T16:22:47.896Z\", \"dateReserved\": \"2026-04-23T04:30:25.690Z\", \"assignerOrgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"datePublished\": \"2026-04-23T04:30:26.124Z\", \"assignerShortName\": \"mitre\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.