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.

The remote SUSE Linux SLES15 host has packages installed that are affected by a vulnerability as referenced in the SUSE- SU-2026:0450-1 advisory.

    - CVE-2026-25506: buffer overflow in message unpacking (bsc#1257651).
    - Make logrotate work on munge log as user munge. This prevents a local privilege escalation     (bsc#1246088).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:0448-1 advisory.

    - CVE-2026-25506: buffer overflow in message unpacking (bsc#1257651).
    - Make `logrotate` work on log as user `munge` to prevent local privilege escalation (bsc#1246088).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4477 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4477-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                    Thorsten Alteholz     February 10, 2026                             https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : munge     Version        : 0.5.14-4+deb11u1     CVE ID         : CVE-2026-25506


    Titouan Lazard discovered a buffer overflow vulnerability in munge, an     authentication service to create and validate credentials, which may     allow local users to leak the MUNGE cryptographic key and forge     arbitrary credentials.

    Additional details can be found in the upstream advisory:
    https://github.com/dun/munge/security/advisories/GHSA-r9cr-jf4v-75gh


    For Debian 11 bullseye, this problem has been fixed in version     0.5.14-4+deb11u1.

    We recommend that you upgrade your munge packages.

    For the detailed security status of munge please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/munge

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-25506)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Debian 12 / 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6129 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6129-1                   security@debian.org     https://www.debian.org/security/                     Salvatore Bonaccorso     February 10, 2026                     https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : munge     CVE ID         : CVE-2026-25506

    Titouan Lazard discovered a buffer overflow vulnerability in munge, an     authentication service to create and validate credentials, which may     allow local users to leak the MUNGE cryptographic key and forge     arbitrary credentials.

    Additional details can be found in the upstream advisory:
    https://github.com/dun/munge/security/advisories/GHSA-r9cr-jf4v-75gh

    For the oldstable distribution (bookworm), this problem has been fixed     in version 0.5.15-2+deb12u1.

    For the stable distribution (trixie), this problem has been fixed in     version 0.5.16-1.1~deb13u1.

    We recommend that you upgrade your munge packages.

    For the detailed security status of munge please refer to its security     tracker page at:
    https://security-tracker.debian.org/tracker/munge

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
298746	SUSE SLES15 Security Update : munge (SUSE-SU-2026:0450-1)	Nessus	SuSE Local Security Checks	high
298736	SUSE SLES12 Security Update : munge (SUSE-SU-2026:0448-1)	Nessus	SuSE Local Security Checks	high
298586	Debian dla-4477 : libmunge-dev - security update	Nessus	Debian Local Security Checks	high
298578	Linux Distros Unpatched Vulnerability : CVE-2026-25506	Nessus	Misc.	high
298569	Debian dsa-6129 : libmunge-dev - security update	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2026-25506

high

Tenable Plugins

high

high

high

high

high