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DEBIAN-CVE-2026-25075

Type: advisorySource: OSV1 source record

strongSwan versions 4.5.0 prior to 6.0.5 contain an integer underflow vulnerability in the EAP-TTLS AVP parser that allows unauthenticated remote attackers to cause a denial of service by sending crafted AVP data with invalid length fields during IKEv2 authentication. Attackers can exploit the failure to validate AVP length fields before subtraction to trigger excessive memory allocation or NULL pointer dereference, crashing the charon IKE daemon.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-25075

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-25075

strongswan

Source reference: /affected/0/package/name

Affected versions
5.9.8-5

Source reference: /affected/0/versions

5.9.8-5+deb12u1

Source reference: /affected/0/versions

5.9.8-5+deb12u2

Source reference: /affected/0/versions

Fixed versions
5.9.8-5+deb12u3

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

strongswan

Source reference: /affected/1/package/name

Affected versions
6.0.1-6

Source reference: /affected/1/versions

6.0.1-6+deb13u1

Source reference: /affected/1/versions

6.0.1-6+deb13u2

Source reference: /affected/1/versions

Fixed versions
6.0.1-6+deb13u4

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

strongswan

Source reference: /affected/2/package/name

Affected versions
6.0.1-6

Source reference: /affected/2/versions

6.0.2-1

Source reference: /affected/2/versions

6.0.3-1

Source reference: /affected/2/versions

6.0.4-1

Source reference: /affected/2/versions

Fixed versions
6.0.5-1

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "5.9.8-5+deb12u3"
          }
        ]
      }
    ],
    "package": {
      "name": "strongswan",
      "purl": "pkg:deb/debian/strongswan?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "5.9.8-5",
      "5.9.8-5+deb12u1",
      "5.9.8-5+deb12u2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25075.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "6.0.1-6+deb13u4"
          }
        ]
      }
    ],
    "package": {
      "name": "strongswan",
      "purl": "pkg:deb/debian/strongswan?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "6.0.1-6",
      "6.0.1-6+deb13u1",
      "6.0.1-6+deb13u2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25075.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "6.0.5-1"
          }
        ]
      }
    ],
    "package": {
      "name": "strongswan",
      "purl": "pkg:deb/debian/strongswan?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "6.0.1-6",
      "6.0.2-1",
      "6.0.3-1",
      "6.0.4-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25075.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57495 · Revision 1
Added to Heist Feed
Publisher date
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