FKIE_CVE-2026-57195

Vulnerability from fkie_nvd - Published: 2026-10-27 21:18 - Updated: 2026-10-27 21:18
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, a NULL pointer dereference in the `Asterisk Manager Interface (AMI)` may allow an unauthenticated attacker to crash Asterisk when `Digest Authentication` is used via `HTTP`. The Asterisk `HTTP` web server, AMI, and AMI access via `HTTP` must all be enabled; each is disabled by default. The attacker must be able to connect to the `HTTP` server, which binds only to `127.0.0.1` by default even when enabled. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
References
security-advisories@github.comhttps://github.com/asterisk/asterisk/commit/10c5b2efcacab03bf04a229f81cc24e76fe42c41
security-advisories@github.comhttps://github.com/asterisk/asterisk/commit/362ef847e7e057b7626e476ddcfe7328ea314db4
security-advisories@github.comhttps://github.com/asterisk/asterisk/commit/5d5d8d8ef7f16774820b1889ae73d8d2ab14af45
security-advisories@github.comhttps://github.com/asterisk/asterisk/commit/87a1f43e4c465b885163665aa89172ed0f392663
security-advisories@github.comhttps://github.com/asterisk/asterisk/commit/a1fcfdf9b91ed58cc8fb9da8d135da60bae7345d
security-advisories@github.comhttps://github.com/asterisk/asterisk/commit/abba42c58fee2226a709583afdbeec75cf1dde8b
security-advisories@github.comhttps://github.com/asterisk/asterisk/commit/fff89162cdd702e8a143701f138edd8dceab154f
security-advisories@github.comhttps://github.com/asterisk/asterisk/releases/tag/20.20.1
security-advisories@github.comhttps://github.com/asterisk/asterisk/releases/tag/21.12.3
security-advisories@github.comhttps://github.com/asterisk/asterisk/releases/tag/22.10.1
security-advisories@github.comhttps://github.com/asterisk/asterisk/releases/tag/23.4.1
security-advisories@github.comhttps://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11
security-advisories@github.comhttps://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3
security-advisories@github.comhttps://github.com/asterisk/asterisk/security/advisories/GHSA-3rhj-hhw7-m6fw
security-advisories@github.comhttps://github.com/asterisk/asterisk/tree/24.0.0-pre1
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "asterisk",
          "vendor": "asterisk",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 20.20.1"
            },
            {
              "status": "affected",
              "version": "\u003e= 21.0.0-pre1, \u003c 21.12.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 22.0.0-pre1, \u003c 22.10.1"
            },
            {
              "status": "affected",
              "version": "\u003e= 23.0.0-pre1, \u003c 23.4.1"
            }
          ]
        },
        {
          "product": "certified-asterisk",
          "vendor": "asterisk",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 20.7-cert11"
            },
            {
              "status": "affected",
              "version": "\u003e= 22.8-cert1-pre1, \u003c 22.8-cert3"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, a NULL pointer dereference in the `Asterisk Manager Interface (AMI)` may allow an unauthenticated attacker to crash Asterisk when `Digest Authentication` is used via `HTTP`. The Asterisk `HTTP` web server, AMI, and AMI access via `HTTP` must all be enabled; each is disabled by default. The attacker must be able to connect to the `HTTP` server, which binds only to `127.0.0.1` by default even when enabled. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3."
    }
  ],
  "id": "CVE-2026-57195",
  "lastModified": "2026-10-27T21:18:06.633",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-10-27T21:18:06.633",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/commit/10c5b2efcacab03bf04a229f81cc24e76fe42c41"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/commit/362ef847e7e057b7626e476ddcfe7328ea314db4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/commit/5d5d8d8ef7f16774820b1889ae73d8d2ab14af45"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/commit/87a1f43e4c465b885163665aa89172ed0f392663"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/commit/a1fcfdf9b91ed58cc8fb9da8d135da60bae7345d"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/commit/abba42c58fee2226a709583afdbeec75cf1dde8b"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/commit/fff89162cdd702e8a143701f138edd8dceab154f"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/releases/tag/20.20.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/releases/tag/21.12.3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/releases/tag/22.10.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/releases/tag/23.4.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/security/advisories/GHSA-3rhj-hhw7-m6fw"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/tree/24.0.0-pre1"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}



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