CVE-2025-13151 (GCVE-0-2025-13151)

Vulnerability from cvelistv5 – Published: 2026-01-07 21:14 – Updated: 2026-01-20 17:08
VLAI
Title
CVE-2025-13151
Summary
Stack-based buffer overflow in libtasn1 version: v4.20.0. The function fails to validate the size of input data resulting in a buffer overflow in asn1_expend_octet_string.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
GnuTLS libtasn1 Affected: 0 , ≤ 4.20.0 (semver)
Create a notification for this product.
Credits
This issue was reported Benny Zelster from Microsoft Security Research
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-13151",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-07T21:32:59.782767Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-07T21:33:12.865Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2026-01-20T17:08:41.712Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/01/08/5"
          },
          {
            "url": "https://www.kb.cert.org/vuls/id/271649"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "libtasn1",
          "vendor": "GnuTLS",
          "versions": [
            {
              "lessThanOrEqual": "4.20.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "This issue was reported Benny Zelster from Microsoft Security Research"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Stack-based buffer overflow in libtasn1 version: v4.20.0. The function fails to validate the size of input data resulting in a buffer overflow in asn1_expend_octet_string."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-120 Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
              "lang": "en"
            }
          ]
        },
        {
          "descriptions": [
            {
              "description": "CWE-121 Stack-based Buffer Overflow",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-07T21:15:56.927Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "name": "Source Code Respoitory",
          "url": "https://gitlab.com/gnutls/libtasn1"
        },
        {
          "name": "Proposed Pull Request",
          "tags": [
            "patch"
          ],
          "url": "https://gitlab.com/gnutls/libtasn1/-/merge_requests/121"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "CVE-2025-13151",
      "x_generator": {
        "engine": "VINCE 3.0.31",
        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2025-13151"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2025-13151",
    "datePublished": "2026-01-07T21:14:05.223Z",
    "dateReserved": "2025-11-13T21:14:53.973Z",
    "dateUpdated": "2026-01-20T17:08:41.712Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-13151",
      "date": "2026-06-25",
      "epss": "0.01109",
      "percentile": "0.6171"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-13151\",\"sourceIdentifier\":\"cret@cert.org\",\"published\":\"2026-01-07T22:15:43.200\",\"lastModified\":\"2026-02-02T19:27:23.070\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Stack-based buffer overflow in libtasn1 version: v4.20.0. The function fails to validate the size of input data resulting in a buffer overflow in asn1_expend_octet_string.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:gnu:libtasn1:4.20.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07E5B1B9-3891-490C-B148-DD952764A8A0\"}]}]}],\"references\":[{\"url\":\"https://gitlab.com/gnutls/libtasn1\",\"source\":\"cret@cert.org\",\"tags\":[\"Product\"]},{\"url\":\"https://gitlab.com/gnutls/libtasn1/-/merge_requests/121\",\"source\":\"cret@cert.org\",\"tags\":[\"Patch\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2026/01/08/5\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Patch\"]},{\"url\":\"https://www.kb.cert.org/vuls/id/271649\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"http://www.openwall.com/lists/oss-security/2026/01/08/5\"}, {\"url\": \"https://www.kb.cert.org/vuls/id/271649\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2026-01-20T17:08:41.712Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-13151\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-07T21:32:59.782767Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-07T21:32:37.425Z\"}}], \"cna\": {\"title\": \"CVE-2025-13151\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"This issue was reported Benny Zelster from Microsoft Security Research\"}], \"affected\": [{\"vendor\": \"GnuTLS\", \"product\": \"libtasn1\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.20.0\"}]}], \"references\": [{\"url\": \"https://gitlab.com/gnutls/libtasn1\", \"name\": \"Source Code Respoitory\"}, {\"url\": \"https://gitlab.com/gnutls/libtasn1/-/merge_requests/121\", \"name\": \"Proposed Pull Request\", \"tags\": [\"patch\"]}], \"x_generator\": {\"env\": \"prod\", \"engine\": \"VINCE 3.0.31\", \"origin\": \"https://cveawg.mitre.org/api/cve/CVE-2025-13151\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Stack-based buffer overflow in libtasn1 version: v4.20.0. The function fails to validate the size of input data resulting in a buffer overflow in asn1_expend_octet_string.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"description\": \"CWE-120 Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"description\": \"CWE-121 Stack-based Buffer Overflow\"}]}], \"providerMetadata\": {\"orgId\": \"37e5125f-f79b-445b-8fad-9564f167944b\", \"shortName\": \"certcc\", \"dateUpdated\": \"2026-01-07T21:15:56.927Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-13151\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-20T17:08:41.712Z\", \"dateReserved\": \"2025-11-13T21:14:53.973Z\", \"assignerOrgId\": \"37e5125f-f79b-445b-8fad-9564f167944b\", \"datePublished\": \"2026-01-07T21:14:05.223Z\", \"assignerShortName\": \"certcc\"}",
      "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.