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DEBIAN-CVE-2026-25506

Type: advisorySource: OSV1 source record

MUNGE is an authentication service for creating and validating user credentials. From 0.5 to 0.5.17, local attacker can exploit a buffer overflow vulnerability in munged (the MUNGE authentication daemon) to leak cryptographic key material from process memory. With the leaked key material, the attacker could forge arbitrary MUNGE credentials to impersonate any user (including root) to services that rely on MUNGE for authentication. The vulnerability allows a buffer overflow by sending a crafted message with an oversized address length field, corrupting munged's internal state and enabling extraction of the MAC subkey used for credential verification. This vulnerability is fixed in 0.5.18.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-25506

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-2026-25506

munge

Source reference: /affected/0/package/name

Affected versions
0.5.15-2

Source reference: /affected/0/versions

Fixed versions
0.5.15-2+deb12u1

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

munge

Source reference: /affected/1/package/name

Affected versions
0.5.16-1

Source reference: /affected/1/versions

Fixed versions
0.5.16-1.1~deb13u1

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

munge

Source reference: /affected/2/package/name

Affected versions
0.5.16-1

Source reference: /affected/2/versions

0.5.16-1.1~deb13u1

Source reference: /affected/2/versions

Fixed versions
0.5.16-1.1

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": "0.5.15-2+deb12u1"
          }
        ]
      }
    ],
    "package": {
      "name": "munge",
      "purl": "pkg:deb/debian/munge?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "0.5.15-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25506.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.5.16-1.1~deb13u1"
          }
        ]
      }
    ],
    "package": {
      "name": "munge",
      "purl": "pkg:deb/debian/munge?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "0.5.16-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25506.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.5.16-1.1"
          }
        ]
      }
    ],
    "package": {
      "name": "munge",
      "purl": "pkg:deb/debian/munge?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "0.5.16-1",
      "0.5.16-1.1~deb13u1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25506.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57491 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-25506 · Revision 1Source updated