Vulnerability-Lookup

CVE-2025-49133 (GCVE-0-2025-49133)

Vulnerability from cvelistv5 – Published: 2025-06-10 19:46 – Updated: 2025-11-03 20:05

Title

Libtpms contains a possible out-of-bound access and abort due to HMAC signing issue

Summary

Libtpms is a library that targets the integration of TPM functionality into hypervisors, primarily into Qemu. Libtpms, which is derived from the TPM 2.0 reference implementation code published by the Trusted Computing Group, is prone to a potential out of bounds (OOB) read vulnerability. The vulnerability occurs in the ‘CryptHmacSign’ function with an inconsistent pairing of the signKey and signScheme parameters, where the signKey is ALG_KEYEDHASH key and inScheme is an ECC or RSA scheme. The reported vulnerability is in the ‘CryptHmacSign’ function, which is defined in the "Part 4: Supporting Routines – Code" document, section "7.151 - /tpm/src/crypt/CryptUtil.c ". This vulnerability can be triggered from user-mode applications by sending malicious commands to a TPM 2.0/vTPM (swtpm) whose firmware is based on an affected TCG reference implementation. The effect on libtpms is that it will cause an abort due to the detection of the out-of-bounds access, thus for example making a vTPM (swtpm) unavailable to a VM. This vulnerability is fixed in 0.7.12, 0.8.10, 0.9.7, and 0.10.1.

Severity

5.9 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-06-10 20:00 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7763 records in the last 180 days details

References

5 references

URL	Tags
https://github.com/stefanberger/libtpms/security/…	x_refsource_CONFIRM
https://github.com/stefanberger/libtpms/commit/04…	x_refsource_MISC
https://trustedcomputinggroup.org/resource/tpm-li…	x_refsource_MISC
https://trustedcomputinggroup.org/wp-content/uplo…	x_refsource_MISC
https://www.kb.cert.org/vuls/id/282450

Impacted products

1 product

Vendor	Product	Version	CPE status
stefanberger	libtpms	Affected: = 0.7.11 Affected: = 0.8.9 Affected: = 0.9.6 Affected: = 0.10.0	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-49133",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-06-10T20:00:47.887183Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-06-10T20:01:40.310Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:05:08.172Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://www.kb.cert.org/vuls/id/282450"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "libtpms",
          "vendor": "stefanberger",
          "versions": [
            {
              "status": "affected",
              "version": "= 0.7.11"
            },
            {
              "status": "affected",
              "version": "= 0.8.9"
            },
            {
              "status": "affected",
              "version": "= 0.9.6"
            },
            {
              "status": "affected",
              "version": "= 0.10.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Libtpms is a library that targets the integration of TPM functionality into hypervisors, primarily into Qemu. Libtpms, which is derived from the TPM 2.0 reference implementation code published by the Trusted Computing Group, is prone to a potential out of bounds (OOB) read vulnerability. The vulnerability occurs in the \u2018CryptHmacSign\u2019 function with an inconsistent pairing of the signKey and signScheme parameters, where the signKey is ALG_KEYEDHASH key and inScheme is an ECC or RSA scheme. The reported vulnerability is in the \u2018CryptHmacSign\u2019 function, which is defined in the \"Part 4: Supporting Routines \u2013 Code\" document, section \"7.151 - /tpm/src/crypt/CryptUtil.c \". This vulnerability can be triggered from user-mode applications by sending malicious commands to a TPM 2.0/vTPM (swtpm) whose firmware is based on an affected TCG reference implementation. The effect on libtpms is that it will cause an abort due to the detection of the out-of-bounds access, thus for example making a vTPM (swtpm) unavailable to a VM. This vulnerability is fixed in 0.7.12, 0.8.10, 0.9.7, and 0.10.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-125",
              "description": "CWE-125: Out-of-bounds Read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-10T19:46:27.397Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/stefanberger/libtpms/security/advisories/GHSA-25w5-6fjj-hf8g",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/stefanberger/libtpms/security/advisories/GHSA-25w5-6fjj-hf8g"
        },
        {
          "name": "https://github.com/stefanberger/libtpms/commit/04b2d8e9afc0a9b6bffe562a23e58c0de11532d1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/stefanberger/libtpms/commit/04b2d8e9afc0a9b6bffe562a23e58c0de11532d1"
        },
        {
          "name": "https://trustedcomputinggroup.org/resource/tpm-library-specification",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://trustedcomputinggroup.org/resource/tpm-library-specification"
        },
        {
          "name": "https://trustedcomputinggroup.org/wp-content/uploads/TPM-2.0-1.83-Part-4-Supporting-Routines-Code.pdf",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://trustedcomputinggroup.org/wp-content/uploads/TPM-2.0-1.83-Part-4-Supporting-Routines-Code.pdf"
        }
      ],
      "source": {
        "advisory": "GHSA-25w5-6fjj-hf8g",
        "discovery": "UNKNOWN"
      },
      "title": "Libtpms contains a possible out-of-bound access and abort due to HMAC signing issue"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-49133",
    "datePublished": "2025-06-10T19:46:27.397Z",
    "dateReserved": "2025-06-02T10:39:41.633Z",
    "dateUpdated": "2025-11-03T20:05:08.172Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-49133",
      "date": "2026-11-11",
      "epss": "0.00193",
      "percentile": "0.09028"
    },
    "microsoft_vex": {
      "current_release_date": "2025-08-07T00:00:00.000Z",
      "cve": "CVE-2025-49133",
      "id": "msrc_CVE-2025-49133",
      "initial_release_date": "2025-06-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "Libtpms contains a possible out-of-bound access and abort due to HMAC signing issue",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-49133.json",
      "version": "1"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "libtpms",
                "vendor": "stefanberger",
                "versions": [
                  {
                    "status": "affected",
                    "version": "= 0.7.11"
                  },
                  {
                    "status": "affected",
                    "version": "= 0.8.9"
                  },
                  {
                    "status": "affected",
                    "version": "= 0.9.6"
                  },
                  {
                    "status": "affected",
                    "version": "= 0.10.0"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:libtpms_project:libtpms:0.7.11:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6694670F-F730-4D4E-BABA-E7DD9590C427",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:libtpms_project:libtpms:0.8.9:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C9364766-F471-4129-B95D-2B81827BD8D3",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:libtpms_project:libtpms:0.9.6:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E0B72018-66F3-4E3C-A52C-640B8115C535",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:libtpms_project:libtpms:0.10.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6BE30A5E-F67D-4625-A9C2-19DD3BF80F29",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Libtpms is a library that targets the integration of TPM functionality into hypervisors, primarily into Qemu. Libtpms, which is derived from the TPM 2.0 reference implementation code published by the Trusted Computing Group, is prone to a potential out of bounds (OOB) read vulnerability. The vulnerability occurs in the \u2018CryptHmacSign\u2019 function with an inconsistent pairing of the signKey and signScheme parameters, where the signKey is ALG_KEYEDHASH key and inScheme is an ECC or RSA scheme. The reported vulnerability is in the \u2018CryptHmacSign\u2019 function, which is defined in the \"Part 4: Supporting Routines \u2013 Code\" document, section \"7.151 - /tpm/src/crypt/CryptUtil.c \". This vulnerability can be triggered from user-mode applications by sending malicious commands to a TPM 2.0/vTPM (swtpm) whose firmware is based on an affected TCG reference implementation. The effect on libtpms is that it will cause an abort due to the detection of the out-of-bounds access, thus for example making a vTPM (swtpm) unavailable to a VM. This vulnerability is fixed in 0.7.12, 0.8.10, 0.9.7, and 0.10.1."
          },
          {
            "lang": "es",
            "value": "Libtpms es una librer\u00eda que integra la funcionalidad TPM en hipervisores, principalmente en Qemu. Libtpms, derivada del c\u00f3digo de implementaci\u00f3n de referencia de TPM 2.0 publicado por Trusted Computing Group, es propensa a una posible vulnerabilidad de lectura fuera de los l\u00edmites (OOB). La vulnerabilidad se produce en la funci\u00f3n \u0027CryptHmacSign\u0027 con una combinaci\u00f3n inconsistente de los par\u00e1metros signKey y signScheme, donde signKey es la clave ALG_KEYEDHASH e inScheme es un esquema ECC o RSA. La vulnerabilidad reportada se encuentra en la funci\u00f3n \u0027CryptHmacSign\u0027, definida en el documento \"Parte 4: Rutinas de Soporte - C\u00f3digo\", secci\u00f3n \"7.151 - /tpm/src/crypt/CryptUtil.c\". Esta vulnerabilidad puede activarse desde aplicaciones en modo usuario mediante el env\u00edo de comandos maliciosos a un TPM 2.0/vTPM (swtpm) cuyo firmware se basa en una implementaci\u00f3n de referencia de TCG afectada. El efecto en libtpms es que provocar\u00e1 una interrupci\u00f3n debido a la detecci\u00f3n de un acceso fuera de los l\u00edmites, lo que, por ejemplo, har\u00e1 que un vTPM (swtpm) no est\u00e9 disponible para una m\u00e1quina virtual. Esta vulnerabilidad est\u00e1 corregida en las versiones 0.7.12, 0.8.10, 0.9.7 y 0.10.1."
          }
        ],
        "id": "CVE-2025-49133",
        "lastModified": "2026-06-17T09:30:48.100",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.9,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.5,
              "impactScore": 4.0,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2025-49133",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-06-10T20:00:47.887183Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2025-06-10T20:15:24.337",
        "references": [
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Patch"
            ],
            "url": "https://github.com/stefanberger/libtpms/commit/04b2d8e9afc0a9b6bffe562a23e58c0de11532d1"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://github.com/stefanberger/libtpms/security/advisories/GHSA-25w5-6fjj-hf8g"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Product"
            ],
            "url": "https://trustedcomputinggroup.org/resource/tpm-library-specification"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Product"
            ],
            "url": "https://trustedcomputinggroup.org/wp-content/uploads/TPM-2.0-1.83-Part-4-Supporting-Routines-Code.pdf"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://www.kb.cert.org/vuls/id/282450"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-125"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-06T13:09:44+00:00",
      "cve": "CVE-2025-49133",
      "id": "CVE-2025-49133",
      "initial_release_date": "2025-06-10T19:46:27.397000+00:00",
      "product_status:fixed": "2927",
      "product_status:known_affected": "6",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "libtpms: Libtpms Out-of-Bounds Read Vulnerability",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-49133.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2025-11-03T20:05:08.172Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "url": "https://www.kb.cert.org/vuls/id/282450"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2025-49133",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-06-10T20:00:47.887183Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-06-10T20:00:51.713Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "libtpms",
              "vendor": "stefanberger",
              "versions": [
                {
                  "status": "affected",
                  "version": "= 0.7.11"
                },
                {
                  "status": "affected",
                  "version": "= 0.8.9"
                },
                {
                  "status": "affected",
                  "version": "= 0.9.6"
                },
                {
                  "status": "affected",
                  "version": "= 0.10.0"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Libtpms is a library that targets the integration of TPM functionality into hypervisors, primarily into Qemu. Libtpms, which is derived from the TPM 2.0 reference implementation code published by the Trusted Computing Group, is prone to a potential out of bounds (OOB) read vulnerability. The vulnerability occurs in the \u2018CryptHmacSign\u2019 function with an inconsistent pairing of the signKey and signScheme parameters, where the signKey is ALG_KEYEDHASH key and inScheme is an ECC or RSA scheme. The reported vulnerability is in the \u2018CryptHmacSign\u2019 function, which is defined in the \"Part 4: Supporting Routines \u2013 Code\" document, section \"7.151 - /tpm/src/crypt/CryptUtil.c \". This vulnerability can be triggered from user-mode applications by sending malicious commands to a TPM 2.0/vTPM (swtpm) whose firmware is based on an affected TCG reference implementation. The effect on libtpms is that it will cause an abort due to the detection of the out-of-bounds access, thus for example making a vTPM (swtpm) unavailable to a VM. This vulnerability is fixed in 0.7.12, 0.8.10, 0.9.7, and 0.10.1."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.9,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-125",
                  "description": "CWE-125: Out-of-bounds Read",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-06-10T19:46:27.397Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/stefanberger/libtpms/security/advisories/GHSA-25w5-6fjj-hf8g",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/stefanberger/libtpms/security/advisories/GHSA-25w5-6fjj-hf8g"
            },
            {
              "name": "https://github.com/stefanberger/libtpms/commit/04b2d8e9afc0a9b6bffe562a23e58c0de11532d1",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/stefanberger/libtpms/commit/04b2d8e9afc0a9b6bffe562a23e58c0de11532d1"
            },
            {
              "name": "https://trustedcomputinggroup.org/resource/tpm-library-specification",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://trustedcomputinggroup.org/resource/tpm-library-specification"
            },
            {
              "name": "https://trustedcomputinggroup.org/wp-content/uploads/TPM-2.0-1.83-Part-4-Supporting-Routines-Code.pdf",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://trustedcomputinggroup.org/wp-content/uploads/TPM-2.0-1.83-Part-4-Supporting-Routines-Code.pdf"
            }
          ],
          "source": {
            "advisory": "GHSA-25w5-6fjj-hf8g",
            "discovery": "UNKNOWN"
          },
          "title": "Libtpms contains a possible out-of-bound access and abort due to HMAC signing issue"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2025-49133",
        "datePublished": "2025-06-10T19:46:27.397Z",
        "dateReserved": "2025-06-02T10:39:41.633Z",
        "dateUpdated": "2025-11-03T20:05:08.172Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

RHSA-2025:12293

Vulnerability from csaf_redhat - Published: 2025-07-30 10:37 - Updated: 2026-08-06 13:09

Summary

Red Hat Security Advisory: virt:rhel and virt-devel:rhel security update

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2025-49133.

CVE-2025-49133

A flaw was found in libtpms. A heap buffer overflow can occur in the `tpms_parse_pssh` function when parsing a malformed Public Signature Key Exchange (PSK) structure. A local attacker can trigger this overflow by providing a crafted PSK structure to the library. This can lead to a denial of service or allow for arbitrary code execution.

5.9 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H

Fixed: 663 products

https://access.redhat.com/errata/RHSA-2025:12293

Open the full advisory

RHSA-2025:12527

Vulnerability from csaf_redhat - Published: 2025-08-04 15:19 - Updated: 2026-08-06 13:09

Summary

Red Hat Security Advisory: virt:rhel and virt-devel:rhel security update

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2025-49133.

CVE-2025-49133

5.9 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H

Fixed: 938 products

https://access.redhat.com/errata/RHSA-2025:12527

Open the full advisory

RHSA-2025:16428

Vulnerability from csaf_redhat - Published: 2025-09-23 08:27 - Updated: 2026-08-06 13:09

Summary

Red Hat Security Advisory: libtpms security update

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2025-49133.

CVE-2025-49133

5.9 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H

Fixed: 10 products

https://access.redhat.com/errata/RHSA-2025:16428

Open the full advisory

SUSE-SU-2026:1388-1

Vulnerability from csaf_suse - Published: 2026-04-16 09:18 - Updated: 2026-04-16 09:18

Summary

Security update for libtpms

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2025-49133.

CVE-2025-49133

5.9 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H

Recommended: 16 products

Open the full advisory

SUSE-SU-2026:21035-1

Vulnerability from csaf_suse - Published: 2026-04-08 14:28 - Updated: 2026-09-16 19:38

Summary

Security update for libtpms

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2025-49133.

CVE-2025-49133

5.9 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H

Recommended: 4 products

Open the full advisory

SUSE-SU-2026:21064-1

Vulnerability from csaf_suse - Published: 2026-04-08 14:17 - Updated: 2026-09-20 18:37

Summary

Security update for libtpms

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2025-49133.

CVE-2025-49133

5.9 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H

Recommended: 3 products

Open the full advisory

SUSE-SU-2026:21571-1

Vulnerability from csaf_suse - Published: 2026-05-06 18:18 - Updated: 2026-09-16 19:47

Summary

Security update for libtpms

Severity

Moderate

Scope

2 vulnerabilities in this advisory, including CVE-2025-49133.

CVE-2025-49133

5.9 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H

Recommended: 8 products

Open the full advisory

SUSE-SU-2026:21581-1

Vulnerability from csaf_suse - Published: 2026-05-06 18:18 - Updated: 2026-10-15 17:06

Summary

Security update for libtpms

Severity

Moderate

Scope

2 vulnerabilities in this advisory, including CVE-2025-49133.

CVE-2025-49133

5.9 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H

Recommended: 4 products

Open the full advisory

SUSE-SU-2026:4278-1

Vulnerability from csaf_suse - Published: 2026-09-22 08:31 - Updated: 2026-09-23 08:31

Summary

Security update for libtpms

Severity

Moderate

Scope

2 vulnerabilities in this advisory, including CVE-2025-49133.

CVE-2025-49133

5.9 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H

Recommended: 10 products

Open the full advisory

UBUNTU-CVE-2025-49133 (CVE-2025-49133)

Vulnerability from osv_ubuntu – Published: 2025-06-10 20:15 – Updated: 2026-04-22 07:56 – Source website

Details

Severity

5.9 (Medium)


                    
                      CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H

5.5 (Medium)


                    
                      CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2025-49133	REPORT
	https://www.cve.org/CVERecord?id=CVE-2025-49133	REPORT
	https://github.com/stefanberger/libtpms/security/…	REPORT
	https://trustedcomputinggroup.org/resource/tpm-li…	REPORT
	https://trustedcomputinggroup.org/wp-content/uplo…	REPORT
	https://ubuntu.com/security/notices/USN-7617-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libtpms0",
            "binary_version": "0.9.3-0ubuntu1.22.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libtpms",
        "purl": "pkg:deb/ubuntu/libtpms@0.9.3-0ubuntu1.22.04.2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.3-0ubuntu1.22.04.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.8.2-1ubuntu1",
        "0.9.0-0ubuntu1",
        "0.9.0-0ubuntu2",
        "0.9.0-0ubuntu3",
        "0.9.0-0ubuntu4",
        "0.9.3-0ubuntu1",
        "0.9.3-0ubuntu1.22.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libtpms0",
            "binary_version": "0.9.3-0ubuntu4.24.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libtpms",
        "purl": "pkg:deb/ubuntu/libtpms@0.9.3-0ubuntu4.24.04.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.3-0ubuntu4.24.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.9.3-0ubuntu2",
        "0.9.3-0ubuntu3",
        "0.9.3-0ubuntu4"
      ]
    }
  ],
  "aliases": [],
  "details": "Libtpms is a library that targets the integration of TPM functionality into hypervisors, primarily into Qemu. Libtpms, which is derived from the TPM 2.0 reference implementation code published by the Trusted Computing Group, is prone to a potential out of bounds (OOB) read vulnerability. The vulnerability occurs in the \u2018CryptHmacSign\u2019 function with an inconsistent pairing of the signKey and signScheme parameters, where the signKey is ALG_KEYEDHASH key and inScheme is an ECC or RSA scheme. The reported vulnerability is in the \u2018CryptHmacSign\u2019 function, which is defined in the \"Part 4: Supporting Routines \u2013 Code\" document, section \"7.151 - /tpm/src/crypt/CryptUtil.c \". This vulnerability can be triggered from user-mode applications by sending malicious commands to a TPM 2.0/vTPM (swtpm) whose firmware is based on an affected TCG reference implementation. The effect on libtpms is that it will cause an abort due to the detection of the out-of-bounds access, thus for example making a vTPM (swtpm) unavailable to a VM. This vulnerability is fixed in 0.7.12, 0.8.10, 0.9.7, and 0.10.1.",
  "id": "UBUNTU-CVE-2025-49133",
  "modified": "2026-04-22T07:56:54Z",
  "published": "2025-06-10T20:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-49133"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-49133"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/stefanberger/libtpms/security/advisories/GHSA-25w5-6fjj-hf8g"
    },
    {
      "type": "REPORT",
      "url": "https://trustedcomputinggroup.org/resource/tpm-library-specification"
    },
    {
      "type": "REPORT",
      "url": "https://trustedcomputinggroup.org/wp-content/uploads/TPM-2.0-1.83-Part-4-Supporting-Routines-Code.pdf"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7617-1"
    }
  ],
  "related": [
    "USN-7617-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-49133"
  ]
}

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

Order 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.

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

CVE-2025-49133 (GCVE-0-2025-49133)

UBUNTU-CVE-2025-49133 (CVE-2025-49133)

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour