CVE-2025-68276 (GCVE-0-2025-68276)

Vulnerability from cvelistv5 – Published: 2026-01-12 17:31 – Updated: 2026-01-12 18:41
VLAI
Title
Avahi has a reachable assertion in avahi_wide_area_scan_cache
Summary
Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, an unprivileged local users can crash avahi-daemon (with wide-area disabled) by creating record browsers with the AVAHI_LOOKUP_USE_WIDE_AREA flag set via D-Bus. This can be done by either calling the RecordBrowserNew method directly or creating hostname/address/service resolvers/browsers that create those browsers internally themselves.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-12 18:41 UTC
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7628 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
avahi avahi Affected: <= 0.9-rc2
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-68276",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-12T18:41:12.045619Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-12T18:41:22.098Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "avahi",
          "vendor": "avahi",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 0.9-rc2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, an unprivileged local users can crash avahi-daemon (with wide-area disabled) by creating record browsers with the AVAHI_LOOKUP_USE_WIDE_AREA flag set via D-Bus. This can be done by either calling\nthe RecordBrowserNew method directly or creating hostname/address/service resolvers/browsers that create those browsers internally themselves."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-617",
              "description": "CWE-617: Reachable Assertion",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-12T17:31:49.652Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/avahi/avahi/security/advisories/GHSA-mhf3-865v-g5rc",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/avahi/avahi/security/advisories/GHSA-mhf3-865v-g5rc"
        },
        {
          "name": "https://github.com/avahi/avahi/pull/806",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/avahi/avahi/pull/806"
        },
        {
          "name": "https://github.com/avahi/avahi/commit/ede7048475c5d47d53890e3bc1350dda8e0b3688",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/avahi/avahi/commit/ede7048475c5d47d53890e3bc1350dda8e0b3688"
        }
      ],
      "source": {
        "advisory": "GHSA-mhf3-865v-g5rc",
        "discovery": "UNKNOWN"
      },
      "title": "Avahi has a reachable assertion in avahi_wide_area_scan_cache"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-68276",
    "datePublished": "2026-01-12T17:31:49.652Z",
    "dateReserved": "2025-12-16T14:17:32.388Z",
    "dateUpdated": "2026-01-12T18:41:22.098Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-68276",
      "date": "2026-10-20",
      "epss": "0.00156",
      "percentile": "0.04357"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-18T14:11:33.000Z",
      "cve": "CVE-2025-68276",
      "id": "msrc_CVE-2025-68276",
      "initial_release_date": "2026-01-02T00:00:00.000Z",
      "product_status:fixed": "4",
      "product_status:known_affected": "5",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "Avahi has a reachable assertion in avahi_wide_area_scan_cache",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2025-68276.json",
      "version": "4"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "avahi",
                "vendor": "avahi",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c= 0.9-rc2"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:avahi:avahi:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6481267F-934F-4A0C-9B25-59738E798458",
                    "versionEndExcluding": "0.9",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:avahi:avahi:0.9:rc1:*:*:*:*:*:*",
                    "matchCriteriaId": "76971590-AEED-4CB1-B7B7-45EA8FD11524",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, an unprivileged local users can crash avahi-daemon (with wide-area disabled) by creating record browsers with the AVAHI_LOOKUP_USE_WIDE_AREA flag set via D-Bus. This can be done by either calling\nthe RecordBrowserNew method directly or creating hostname/address/service resolvers/browsers that create those browsers internally themselves."
          },
          {
            "lang": "es",
            "value": "Avahi es un sistema que facilita el descubrimiento de servicios en una red local a trav\u00e9s de la suite de protocolos mDNS/DNS-SD. En 0.9-rc2 y versiones anteriores, un usuario local sin privilegios puede bloquear avahi-daemon (con el \u00e1rea extendida deshabilitada) creando navegadores de registros con la bandera AVAHI_LOOKUP_USE_WIDE_AREA establecida a trav\u00e9s de D-Bus. Esto se puede hacer ya sea llamando directamente al m\u00e9todo RecordBrowserNew o creando resolutores/navegadores de nombre de host/direcci\u00f3n/servicio que crean esos navegadores internamente por s\u00ed mismos."
          }
        ],
        "id": "CVE-2025-68276",
        "lastModified": "2026-06-17T09:58:51.220",
        "metrics": {
          "cvssMetricV31": [
            {
              "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": "security-advisories@github.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2025-68276",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-12T18:41:12.045619Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-01-12T18:15:47.560",
        "references": [
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Patch"
            ],
            "url": "https://github.com/avahi/avahi/commit/ede7048475c5d47d53890e3bc1350dda8e0b3688"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Issue Tracking",
              "Patch"
            ],
            "url": "https://github.com/avahi/avahi/pull/806"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://github.com/avahi/avahi/security/advisories/GHSA-mhf3-865v-g5rc"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-617"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-01T11:54:33+00:00",
      "cve": "CVE-2025-68276",
      "id": "CVE-2025-68276",
      "initial_release_date": "2025-01-01T00:00:00+00:00",
      "product_status:fixed": "3",
      "product_status:known_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "avahi: Avahi: Denial of Service via D-Bus record browsers with AVAHI_LOOKUP_USE_WIDE_AREA flag",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68276.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2025-68276",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-01-12T18:41:12.045619Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-01-12T18:41:17.960Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "avahi",
              "vendor": "avahi",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c= 0.9-rc2"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, an unprivileged local users can crash avahi-daemon (with wide-area disabled) by creating record browsers with the AVAHI_LOOKUP_USE_WIDE_AREA flag set via D-Bus. This can be done by either calling\nthe RecordBrowserNew method directly or creating hostname/address/service resolvers/browsers that create those browsers internally themselves."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "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"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-617",
                  "description": "CWE-617: Reachable Assertion",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-01-12T17:31:49.652Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/avahi/avahi/security/advisories/GHSA-mhf3-865v-g5rc",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/avahi/avahi/security/advisories/GHSA-mhf3-865v-g5rc"
            },
            {
              "name": "https://github.com/avahi/avahi/pull/806",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/avahi/avahi/pull/806"
            },
            {
              "name": "https://github.com/avahi/avahi/commit/ede7048475c5d47d53890e3bc1350dda8e0b3688",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/avahi/avahi/commit/ede7048475c5d47d53890e3bc1350dda8e0b3688"
            }
          ],
          "source": {
            "advisory": "GHSA-mhf3-865v-g5rc",
            "discovery": "UNKNOWN"
          },
          "title": "Avahi has a reachable assertion in avahi_wide_area_scan_cache"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2025-68276",
        "datePublished": "2026-01-12T17:31:49.652Z",
        "dateReserved": "2025-12-16T14:17:32.388Z",
        "dateUpdated": "2026-01-12T18:41:22.098Z",
        "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

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.