CVE-2023-27351 (GCVE-0-2023-27351)

Vulnerability from cvelistv5 – Published: 2023-04-20 00:00 – Updated: 2026-04-21 03:55
VLAI CISA Shadowserver KEVIntel
Summary
This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). Authentication is not required to exploit this vulnerability. The specific flaw exists within the SecurityRequestFilter class. The issue results from improper implementation of the authentication algorithm. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-19226.
Severity
8.2 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-287 - Improper Authentication
Assigner
zdi
References
Impacted products
Vendor Product Version
PaperCut NG Affected: 22.0.5 (Build 63914)
Create a notification for this product.
Credits
Piotr Bazydlo (@chudypb) of Trend Micro Zero Day Initiative
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: afc31ae0-5131-4a1e-b730-41f499c91536

Vulnerability ID: CVE-2023-27351

Status: Confirmed

Status Updated: 2026-04-20 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2026-04-20
Asserted: 2026-04-20
Scope
Notes: KEV entry: PaperCut NG/MF Improper Authentication Vulnerability | Affected: PaperCut / NG/MF | Description: PaperCut NG/MF contains an improper authentication vulnerability that could allow remote attackers to bypass authentication on affected installations via the SecurityRequestFilter class. | 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: 2026-05-04 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://www.papercut.com/kb/Main/PO-1216-and-PO-1219 ; https://nvd.nist.gov/vuln/detail/CVE-2023-27351
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-287
Feed CISA Known Exploited Vulnerabilities Catalog
Product NG/MF
Due Date 2026-05-04
Date Added 2026-04-20
Vendorproject PaperCut
Vulnerabilityname PaperCut NG/MF Improper Authentication Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-04-20 20:00 UTC | Updated: 2026-04-20 20:00 UTC
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: c555d607-a490-46e6-b81c-27005a7204c3

Vulnerability ID: CVE-2023-27351

Status: Confirmed

Status Updated: 2026-07-06 00:00 UTC

Exploited: Yes

Characteristics
Severity: 75.0
Timestamps
First Seen: 2026-04-18
Asserted: 2026-04-18
Last Seen: 2026-07-06
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: PaperCut / PaperCut MF/NG | Class: device-management-platform | Severity: High (CVSS 7.5) | IoT: no | In CISA KEV: yes | Honeypot connections on 2026-07-06: 17
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 1
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class device-management-platform
7D Avg 0
Vendor PaperCut
30D Avg 7
90D Avg 4
Product PaperCut MF/NG
Cisa Kev yes
Connections 17
Observation Date 2026-07-06
Vulnerability Class CVSS
Vulnerability Score 7.5
Vulnerability Severity High
References
Created: 2026-06-30 09:22 UTC | Updated: 2026-07-08 01:03 UTC
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 02326394-56c4-4ec5-822c-0301f542bc02

Vulnerability ID: CVE-2023-27351

Status: Confirmed

Status Updated: 2026-06-01 13:22 UTC

Exploited: Yes

Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: KEVIntel entry: This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). Authentication... | Affected: PaperCut / NG | CVSS: 7.5 (HIGH) | EPSS: 0.7842 | Used in malware: yes | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Confirmed Compromise

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). Authentication...
Vendor PaperCut
Product NG
Added Date 2026-06-01T13:22:22.013Z
Cvss Score 7.5
Epss Score 0.7842
Cvss Severity HIGH
Epss Percentile 0.99528
Used In Malware yes
Ahead Of Cisa Kev 
{
  "count": 1,
  "unit": "day"
}
Not Yet In Cisa Kev False
References
Created: 2026-06-23 14:03 UTC | Updated: 2026-06-23 14:03 UTC
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T12:09:43.371Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.papercut.com/kb/Main/PO-1216-and-PO-1219"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-232/"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-27351",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-20T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2026-04-20",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27351"
              },
              "type": "kev"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-21T03:55:37.286Z",
          "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-2023-27351"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-04-20T00:00:00.000Z",
            "value": "CVE-2023-27351 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "NG",
          "vendor": "PaperCut",
          "versions": [
            {
              "status": "affected",
              "version": "22.0.5 (Build 63914)"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Piotr Bazydlo (@chudypb) of Trend Micro Zero Day Initiative"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). Authentication is not required to exploit this vulnerability. The specific flaw exists within the SecurityRequestFilter class. The issue results from improper implementation of the authentication algorithm. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-19226."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287: Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-04-20T15:35:13.491Z",
        "orgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
        "shortName": "zdi"
      },
      "references": [
        {
          "url": "https://www.papercut.com/kb/Main/PO-1216-and-PO-1219"
        },
        {
          "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-232/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
    "assignerShortName": "zdi",
    "cveId": "CVE-2023-27351",
    "datePublished": "2023-04-20T00:00:00.000Z",
    "dateReserved": "2023-02-28T00:00:00.000Z",
    "dateUpdated": "2026-04-21T03:55:37.286Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "cisa_known_exploited": {
      "cveID": "CVE-2023-27351",
      "cwes": "[\"CWE-287\"]",
      "dateAdded": "2026-04-20",
      "dueDate": "2026-05-04",
      "knownRansomwareCampaignUse": "Known",
      "notes": "https://www.papercut.com/kb/Main/PO-1216-and-PO-1219 ; https://nvd.nist.gov/vuln/detail/CVE-2023-27351",
      "product": "NG/MF",
      "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": "PaperCut NG/MF contains an improper authentication vulnerability that could allow remote attackers to bypass authentication on affected installations via the SecurityRequestFilter class.",
      "vendorProject": "PaperCut",
      "vulnerabilityName": "PaperCut NG/MF Improper Authentication Vulnerability"
    },
    "epss": {
      "cve": "CVE-2023-27351",
      "date": "2026-07-09",
      "epss": "0.7842",
      "percentile": "0.99532"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"15.0.0\", \"versionEndExcluding\": \"20.1.7\", \"matchCriteriaId\": \"87F5547A-059F-46A7-A8DB-0613BEF043A5\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"21.0.0\", \"versionEndExcluding\": \"21.2.11\", \"matchCriteriaId\": \"7D231C34-F58C-4CA1-B158-64778AC17991\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"22.0.0\", \"versionEndExcluding\": \"22.0.9\", \"matchCriteriaId\": \"A326E88D-635E-4AC1-B5CE-455306FC9D55\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"15.0.0\", \"versionEndExcluding\": \"20.1.7\", \"matchCriteriaId\": \"5EDC8CF8-64FB-4A9A-95FB-F0F5AEB98CC9\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"21.0.0\", \"versionEndExcluding\": \"21.2.11\", \"matchCriteriaId\": \"4DE19845-02F0-4BB9-BECB-49B34FACB55D\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"22.0.0\", \"versionEndExcluding\": \"22.0.9\", \"matchCriteriaId\": \"C1852E7B-0B3F-4208-A26E-CB117E0C0CD8\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). Authentication is not required to exploit this vulnerability. The specific flaw exists within the SecurityRequestFilter class. The issue results from improper implementation of the authentication algorithm. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-19226.\"}]",
      "id": "CVE-2023-27351",
      "lastModified": "2024-11-21T07:52:43.087",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\", \"baseScore\": 7.5, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 3.6}], \"cvssMetricV30\": [{\"source\": \"zdi-disclosures@trendmicro.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.0\", \"vectorString\": \"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N\", \"baseScore\": 8.2, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 4.2}]}",
      "published": "2023-04-20T16:15:07.723",
      "references": "[{\"url\": \"https://www.papercut.com/kb/Main/PO-1216-and-PO-1219\", \"source\": \"zdi-disclosures@trendmicro.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://www.zerodayinitiative.com/advisories/ZDI-23-232/\", \"source\": \"zdi-disclosures@trendmicro.com\", \"tags\": [\"Third Party Advisory\", \"VDB Entry\"]}, {\"url\": \"https://www.papercut.com/kb/Main/PO-1216-and-PO-1219\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://www.zerodayinitiative.com/advisories/ZDI-23-232/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\", \"VDB Entry\"]}]",
      "sourceIdentifier": "zdi-disclosures@trendmicro.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"zdi-disclosures@trendmicro.com\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-287\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-27351\",\"sourceIdentifier\":\"zdi-disclosures@trendmicro.com\",\"published\":\"2023-04-20T16:15:07.723\",\"lastModified\":\"2026-06-17T05:44:51.087\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). Authentication is not required to exploit this vulnerability. The specific flaw exists within the SecurityRequestFilter class. The issue results from improper implementation of the authentication algorithm. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-19226.\"}],\"affected\":[{\"source\":\"zdi-disclosures@trendmicro.com\",\"affectedData\":[{\"vendor\":\"PaperCut\",\"product\":\"NG\",\"versions\":[{\"version\":\"22.0.5 (Build 63914)\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV30\":[{\"source\":\"zdi-disclosures@trendmicro.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N\",\"baseScore\":8.2,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":4.2}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-04-20T00:00:00+00:00\",\"id\":\"CVE-2023-27351\",\"options\":[{\"exploitation\":\"active\"},{\"automatable\":\"yes\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"cisaExploitAdd\":\"2026-04-20\",\"cisaActionDue\":\"2026-05-04\",\"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\":\"PaperCut NG/MF Improper Authentication Vulnerability\",\"weaknesses\":[{\"source\":\"zdi-disclosures@trendmicro.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-287\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"15.0\",\"versionEndExcluding\":\"20.1.7\",\"matchCriteriaId\":\"B754BD95-F7CC-4A77-A5FB-B627E1E636DB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"21.0.0\",\"versionEndExcluding\":\"21.2.11\",\"matchCriteriaId\":\"7D231C34-F58C-4CA1-B158-64778AC17991\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"22.0.0\",\"versionEndExcluding\":\"22.0.9\",\"matchCriteriaId\":\"A326E88D-635E-4AC1-B5CE-455306FC9D55\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"15.0\",\"versionEndExcluding\":\"20.1.7\",\"matchCriteriaId\":\"BFB91DE7-FAEA-4F7D-B4B6-6B5211DE4AD0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"21.0.0\",\"versionEndExcluding\":\"21.2.11\",\"matchCriteriaId\":\"4DE19845-02F0-4BB9-BECB-49B34FACB55D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"22.0.0\",\"versionEndExcluding\":\"22.0.9\",\"matchCriteriaId\":\"C1852E7B-0B3F-4208-A26E-CB117E0C0CD8\"}]}]}],\"references\":[{\"url\":\"https://www.papercut.com/kb/Main/PO-1216-and-PO-1219\",\"source\":\"zdi-disclosures@trendmicro.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.zerodayinitiative.com/advisories/ZDI-23-232/\",\"source\":\"zdi-disclosures@trendmicro.com\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://www.papercut.com/kb/Main/PO-1216-and-PO-1219\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.zerodayinitiative.com/advisories/ZDI-23-232/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27351\",\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"tags\":[\"US Government Resource\"]}]}}",
    "redhat_vex": {
      "current_release_date": "2025-05-29T00:01:23+00:00",
      "cve": "CVE-2023-27351",
      "id": "CVE-2023-27351",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2023-27351",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-27351.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://www.papercut.com/kb/Main/PO-1216-and-PO-1219\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://www.zerodayinitiative.com/advisories/ZDI-23-232/\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T12:09:43.371Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-27351\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-20T18:01:05.337898Z\"}}}, {\"other\": {\"type\": \"kev\", \"content\": {\"dateAdded\": \"2026-04-20\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27351\"}}}], \"references\": [{\"url\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27351\", \"tags\": [\"government-resource\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-05T14:28:43.009Z\"}, \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-04-20T00:00:00.000Z\", \"value\": \"CVE-2023-27351 added to CISA KEV\"}]}], \"cna\": {\"credits\": [{\"lang\": \"en\", \"value\": \"Piotr Bazydlo (@chudypb) of Trend Micro Zero Day Initiative\"}], \"metrics\": [{\"cvssV3_0\": {\"scope\": \"UNCHANGED\", \"version\": \"3.0\", \"baseScore\": 8.2, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"vendor\": \"PaperCut\", \"product\": \"NG\", \"versions\": [{\"status\": \"affected\", \"version\": \"22.0.5 (Build 63914)\"}]}], \"references\": [{\"url\": \"https://www.papercut.com/kb/Main/PO-1216-and-PO-1219\"}, {\"url\": \"https://www.zerodayinitiative.com/advisories/ZDI-23-232/\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). Authentication is not required to exploit this vulnerability. The specific flaw exists within the SecurityRequestFilter class. The issue results from improper implementation of the authentication algorithm. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-19226.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-287\", \"description\": \"CWE-287: Improper Authentication\"}]}], \"providerMetadata\": {\"orgId\": \"99f1926a-a320-47d8-bbb5-42feb611262e\", \"shortName\": \"zdi\", \"dateUpdated\": \"2023-04-20T15:35:13.491Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-27351\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-21T03:55:37.286Z\", \"dateReserved\": \"2023-02-28T00:00:00.000Z\", \"assignerOrgId\": \"99f1926a-a320-47d8-bbb5-42feb611262e\", \"datePublished\": \"2023-04-20T00:00:00.000Z\", \"assignerShortName\": \"zdi\"}",
      "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.