CVE catalog
CVE-2026-25506
MUNGE vulnerability
- Severity
- High · CVSS 7.7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.34% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | munge | sid | 0.5.18-1 | fixed |
| Debian | munge | forky | 0.5.18-1 | fixed |
| Debian | munge | trixie | 0.5.16-1.1~deb13u1 | fixed |
| Debian | munge | trixie-security | 0.5.16-1.1~deb13u1 | fixed |
| Debian | munge | bookworm | 0.5.15-2+deb12u1 | fixed |
| Debian | munge | bookworm-security | 0.5.15-2+deb12u1 | fixed |
| Ubuntu | munge | noble | 0.5.15-4ubuntu0.1 | fixed |
| Ubuntu | libmunge-dev | noble | 0.5.15-4ubuntu0.1 | fixed |
| Ubuntu | libmunge2 | noble | 0.5.15-4ubuntu0.1 | fixed |
| Ubuntu | munge | pro | 0.5.13-2build1 | vulnerable |
| Ubuntu | munge | pro | 0.5.13-2ubuntu0.1~esm1 | fixed |
| Ubuntu | munge | 22.04 | 0.5.14-6 | vulnerable |
| Ubuntu | munge | 22.04 | 0.5.14-6ubuntu0.1 | fixed |
| Ubuntu | munge | 24.04 | 0.5.15-2 | vulnerable |
| Ubuntu | munge | 24.04 | 0.5.15-3ubuntu1 | vulnerable |
| Ubuntu | munge | 24.04 | 0.5.15-4 | vulnerable |
| Ubuntu | munge | 24.04 | 0.5.15-4build1 | vulnerable |
| Ubuntu | munge | 24.04 | 0.5.15-4ubuntu0.1 | fixed |
| Ubuntu | munge | 25.10 | 0.5.16-1 | vulnerable |
| Ubuntu | munge | 25.10 | 0.5.16-1ubuntu0.1 | fixed |
| Ubuntu | munge | pro | 0.5.13-2build1 | vulnerable |
| Ubuntu | munge | pro | 0.5.13-2ubuntu0.1~esm1 | fixed |
| Ubuntu | munge | 22.04 | 0.5.14-6 | vulnerable |
| Ubuntu | munge | 22.04 | 0.5.14-6ubuntu0.1 | fixed |
| Ubuntu | munge | 24.04 | 0.5.15-2 | vulnerable |
| Ubuntu | munge | 24.04 | 0.5.15-3ubuntu1 | vulnerable |
| Ubuntu | munge | 24.04 | 0.5.15-4 | vulnerable |
| Ubuntu | munge | 24.04 | 0.5.15-4build1 | vulnerable |
| Ubuntu | munge | 24.04 | 0.5.15-4ubuntu0.1 | fixed |
| Ubuntu | munge | 25.10 | 0.5.16-1 | vulnerable |
| Ubuntu | munge | 25.10 | 0.5.16-1ubuntu0.1 | fixed |
| Opensuse | munge | tumbleweed | 0.5.18-1.1 | fixed |
| Suse | munge | linux enterprise server 15 sp6-ltss | 0.5.15-150600.25.6.1 | fixed |
| Opensuse | munge | leap 15.6 | 0.5.15-150600.25.6.1 | fixed |
| Suse | munge | linux enterprise module for hpc 15 sp7 | 0.5.16-150700.3.6.1 | fixed |
| Suse | munge | linux enterprise module for package hub 15 sp7 | 0.5.16-150700.3.6.1 | fixed |
| Suse | munge | linux enterprise high performance computing 15 sp4-espos | 0.5.15-150400.18.10.1 | fixed |
| Suse | munge | linux enterprise high performance computing 15 sp4-ltss | 0.5.15-150400.18.10.1 | fixed |
| Suse | munge | linux enterprise high performance computing 15 sp5-espos | 0.5.15-150400.18.10.1 | fixed |
| Suse | munge | linux enterprise high performance computing 15 sp5-ltss | 0.5.15-150400.18.10.1 | fixed |
| Suse | munge | linux enterprise module for hpc 12 | 0.5.14-3.11.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | munge | source | sid | 0.5.16-1.1 | not yet assigned | Not reported | Not reported |
| Debian | munge | source | forky | 0.5.16-1.1 | not yet assigned | Not reported | Not reported |
| Debian | munge | source | trixie | 0.5.16-1.1~deb13u1 | not yet assigned | Not reported | Not reported |
| Debian | munge | source | bookworm | 0.5.15-2+deb12u1 | not yet assigned | Not reported | Not reported |
| Ubuntu | munge | deb | noble | 0.5.15-4ubuntu0.1 | Not reported | Not reported | Not reported |
| Ubuntu | libmunge-dev | deb | noble | 0.5.15-4ubuntu0.1 | Not reported | Not reported | Not reported |
| Ubuntu | libmunge2 | deb | noble | 0.5.15-4ubuntu0.1 | Not reported | Not reported | Not reported |
| Ubuntu | munge | deb | pro | 0.5.13-2ubuntu0.1~esm1 | Not reported | USN-8040-1 | Not reported |
| Ubuntu | munge | deb | 22.04 | 0.5.14-6ubuntu0.1 | Not reported | USN-8040-1 | Not reported |
| Ubuntu | munge | deb | 24.04 | 0.5.15-4ubuntu0.1 | Not reported | USN-8040-1 | Not reported |
| Ubuntu | munge | deb | 25.10 | 0.5.16-1ubuntu0.1 | Not reported | USN-8040-1 | Not reported |
| Ubuntu | munge | deb | pro | 0.5.13-2ubuntu0.1~esm1 | Not reported | UBUNTU-CVE-2026-25506 | Not reported |
| Ubuntu | munge | deb | 22.04 | 0.5.14-6ubuntu0.1 | Not reported | UBUNTU-CVE-2026-25506 | Not reported |
| Ubuntu | munge | deb | 24.04 | 0.5.15-4ubuntu0.1 | Not reported | UBUNTU-CVE-2026-25506 | Not reported |
| Ubuntu | munge | deb | 25.10 | 0.5.16-1ubuntu0.1 | Not reported | UBUNTU-CVE-2026-25506 | Not reported |
| Opensuse | munge | rpm | tumbleweed | 0.5.18-1.1 | Not reported | OPENSUSE-SU-2026:10178-1 | Not reported |
| Suse | munge | rpm | linux enterprise server 15 sp6-ltss | 0.5.15-150600.25.6.1 | Not reported | SUSE-SU-2026:0484-1 | Not reported |
| Opensuse | munge | rpm | leap 15.6 | 0.5.15-150600.25.6.1 | Not reported | SUSE-SU-2026:0484-1 | Not reported |
| Suse | munge | rpm | linux enterprise module for hpc 15 sp7 | 0.5.16-150700.3.6.1 | Not reported | SUSE-SU-2026:0451-1 | Not reported |
| Suse | munge | rpm | linux enterprise module for package hub 15 sp7 | 0.5.16-150700.3.6.1 | Not reported | SUSE-SU-2026:0451-1 | Not reported |
| Suse | munge | rpm | linux enterprise high performance computing 15 sp4-espos | 0.5.15-150400.18.10.1 | Not reported | SUSE-SU-2026:0450-1 | Not reported |
| Suse | munge | rpm | linux enterprise high performance computing 15 sp4-ltss | 0.5.15-150400.18.10.1 | Not reported | SUSE-SU-2026:0450-1 | Not reported |
| Suse | munge | rpm | linux enterprise high performance computing 15 sp5-espos | 0.5.15-150400.18.10.1 | Not reported | SUSE-SU-2026:0450-1 | Not reported |
| Suse | munge | rpm | linux enterprise high performance computing 15 sp5-ltss | 0.5.15-150400.18.10.1 | Not reported | SUSE-SU-2026:0450-1 | Not reported |
| Suse | munge | rpm | linux enterprise module for hpc 12 | 0.5.14-3.11.1 | Not reported | SUSE-SU-2026:0448-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [libmunge2]Unknown
Source package: [munge]
Details (1)
0.5.18-1.5· x86_64 · tumbleweedUnknown · Fixed:
0.5.18-1.1Version impact unknown
usn · munge · opensuse · tumbleweed
- [munge-devel]Unknown
Source package: [munge]
Details (1)
0.5.18-1.5· x86_64 · tumbleweedUnknown · Fixed:
0.5.18-1.1Version impact unknown
usn · munge · opensuse · tumbleweed
- [munge]Fixed
Source package: [munge]
Details (1)
0.5.18-1.5· x86_64 · tumbleweedFixed · Fixed:
0.5.18-1.1usn · munge · opensuse · tumbleweed
[Debian 12 (Bookworm)]
- [libmunge2]Fixed
Source package: [munge]
Details (4)
0.5.15-2+deb12u1· amd64 · bookwormFixed · Fixed:
0.5.15-2+deb12u1usn · munge · debian · bookworm; usn · munge · debian · 12
0.5.15-2+deb12u1· arm64 · bookwormFixed · Fixed:
0.5.15-2+deb12u1usn · munge · debian · bookworm; usn · munge · debian · 12
0.5.15-2+deb12u1· amd64 · bookworm-securityFixed · Fixed:
0.5.15-2+deb12u1usn · munge · debian · bookworm; usn · munge · debian · 12
0.5.15-2+deb12u1· arm64 · bookworm-securityFixed · Fixed:
0.5.15-2+deb12u1usn · munge · debian · bookworm; usn · munge · debian · 12
- [libmunge-dev]Fixed
Source package: [munge]
Details (4)
0.5.15-2+deb12u1· amd64 · bookwormFixed · Fixed:
0.5.15-2+deb12u1usn · munge · debian · bookworm; usn · munge · debian · 12
0.5.15-2+deb12u1· arm64 · bookwormFixed · Fixed:
0.5.15-2+deb12u1usn · munge · debian · bookworm; usn · munge · debian · 12
0.5.15-2+deb12u1· amd64 · bookworm-securityFixed · Fixed:
0.5.15-2+deb12u1usn · munge · debian · bookworm; usn · munge · debian · 12
0.5.15-2+deb12u1· arm64 · bookworm-securityFixed · Fixed:
0.5.15-2+deb12u1usn · munge · debian · bookworm; usn · munge · debian · 12
- [munge]Fixed
Details (4)
0.5.15-2+deb12u1· amd64 · bookwormFixed · Fixed:
0.5.15-2+deb12u1usn · munge · debian · bookworm; usn · munge · debian · 12
0.5.15-2+deb12u1· arm64 · bookwormFixed · Fixed:
0.5.15-2+deb12u1usn · munge · debian · bookworm; usn · munge · debian · 12
0.5.15-2+deb12u1· amd64 · bookworm-securityFixed · Fixed:
0.5.15-2+deb12u1usn · munge · debian · bookworm; usn · munge · debian · 12
0.5.15-2+deb12u1· arm64 · bookworm-securityFixed · Fixed:
0.5.15-2+deb12u1usn · munge · debian · bookworm; usn · munge · debian · 12
[Debian 13 (Trixie)]
- [libmunge2]Fixed
Source package: [munge]
Details (4)
0.5.16-1.1~deb13u1· amd64 · trixieFixed · Fixed:
0.5.16-1.1~deb13u1usn · munge · debian · 13
0.5.16-1.1~deb13u1· arm64 · trixieFixed · Fixed:
0.5.16-1.1~deb13u1usn · munge · debian · 13
0.5.16-1.1~deb13u1· amd64 · trixie-securityFixed · Fixed:
0.5.16-1.1~deb13u1usn · munge · debian · 13
0.5.16-1.1~deb13u1· arm64 · trixie-securityFixed · Fixed:
0.5.16-1.1~deb13u1usn · munge · debian · 13
- [libmunge-dev]Fixed
Source package: [munge]
Details (4)
0.5.16-1.1~deb13u1· amd64 · trixieFixed · Fixed:
0.5.16-1.1~deb13u1usn · munge · debian · 13
0.5.16-1.1~deb13u1· arm64 · trixieFixed · Fixed:
0.5.16-1.1~deb13u1usn · munge · debian · 13
0.5.16-1.1~deb13u1· amd64 · trixie-securityFixed · Fixed:
0.5.16-1.1~deb13u1usn · munge · debian · 13
0.5.16-1.1~deb13u1· arm64 · trixie-securityFixed · Fixed:
0.5.16-1.1~deb13u1usn · munge · debian · 13
- [munge]Fixed
Details (4)
0.5.16-1.1~deb13u1· amd64 · trixieFixed · Fixed:
0.5.16-1.1~deb13u1usn · munge · debian · 13
0.5.16-1.1~deb13u1· arm64 · trixieFixed · Fixed:
0.5.16-1.1~deb13u1usn · munge · debian · 13
0.5.16-1.1~deb13u1· amd64 · trixie-securityFixed · Fixed:
0.5.16-1.1~deb13u1usn · munge · debian · 13
0.5.16-1.1~deb13u1· arm64 · trixie-securityFixed · Fixed:
0.5.16-1.1~deb13u1usn · munge · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_10178-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-25506]
- [https://osv.dev/vulnerability/DLA-4477-1]
- [https://osv.dev/vulnerability/DSA-6129-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:0448-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:0450-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:0451-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:0484-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-25506]
- [https://osv.dev/vulnerability/USN-8040-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10178-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-25506]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25506.json]
- [https://ubuntu.com/security/notices/USN-8040-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0448.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]