Upstream information

CVE-2026-25506 at MITRE

Description

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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail CNA (GitHub) SUSE
Base Score 7.7 7.7
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L
Attack Vector Local Local
Attack Complexity High High
Privileges Required Low Low
User Interaction None None
Scope Changed Changed
Confidentiality Impact High High
Integrity Impact High High
Availability Impact Low Low
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1257651 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise High Performance Computing 12 SP2
SUSE Linux Enterprise High Performance Computing 12 SP3
SUSE Linux Enterprise High Performance Computing 12 SP4
SUSE Linux Enterprise High Performance Computing 12 SP5
SUSE Linux Enterprise Module for HPC 12
SUSE Linux Enterprise Server 12 SP2
SUSE Linux Enterprise Server 12 SP3
SUSE Linux Enterprise Server 12 SP4
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server for SAP Applications 12 SP2
SUSE Linux Enterprise Server for SAP Applications 12 SP3
SUSE Linux Enterprise Server for SAP Applications 12 SP4
SUSE Linux Enterprise Server for SAP Applications 12 SP5
  • libmunge2 >= 0.5.14-3.11.1
  • munge >= 0.5.14-3.11.1
  • munge-devel >= 0.5.14-3.11.1
 Patchnames:
SUSE-SLE-Module-HPC-12-2026-448
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS
  • libmunge2 >= 0.5.15-150400.18.10.1
  • munge >= 0.5.15-150400.18.10.1
  • munge-devel >= 0.5.15-150400.18.10.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-450
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • libmunge2 >= 0.5.15-150400.18.10.1
  • munge >= 0.5.15-150400.18.10.1
  • munge-devel >= 0.5.15-150400.18.10.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-450
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS
  • libmunge2 >= 0.5.15-150400.18.10.1
  • munge >= 0.5.15-150400.18.10.1
  • munge-devel >= 0.5.15-150400.18.10.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-450
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
  • libmunge2 >= 0.5.15-150400.18.10.1
  • munge >= 0.5.15-150400.18.10.1
  • munge-devel >= 0.5.15-150400.18.10.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-450
SUSE Linux Enterprise High Performance Computing 15 SP7
SUSE Linux Enterprise Module for HPC 15 SP7
  • libmunge2 >= 0.5.16-150700.3.6.1
  • munge >= 0.5.16-150700.3.6.1
  • munge-devel >= 0.5.16-150700.3.6.1
 Patchnames:
SUSE-SLE-Module-HPC-15-SP7-2026-451
SUSE Linux Enterprise Module for Package Hub 15 SP7
  • libmunge2 >= 0.5.16-150700.3.6.1
  • munge >= 0.5.16-150700.3.6.1
  • munge-devel >= 0.5.16-150700.3.6.1
 Patchnames:
SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-451
SUSE Linux Enterprise Server 15 SP6-LTSS
  • libmunge2 >= 0.5.15-150600.25.6.1
  • munge >= 0.5.15-150600.25.6.1
  • munge-devel >= 0.5.15-150600.25.6.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-484
openSUSE Leap 15.6
  • libmunge2 >= 0.5.15-150600.25.6.1
  • libmunge2-32bit >= 0.5.15-150600.25.6.1
  • munge >= 0.5.15-150600.25.6.1
  • munge-devel >= 0.5.15-150600.25.6.1
  • munge-devel-32bit >= 0.5.15-150600.25.6.1
 Patchnames:
openSUSE-SLE-15.6-2026-484
openSUSE Tumbleweed
  • libmunge2 >= 0.5.18-1.1
  • munge >= 0.5.18-1.1
  • munge-devel >= 0.5.18-1.1
 Patchnames:
openSUSE-Tumbleweed-2026-10178

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP7 munge Released
SUSE Linux Enterprise Module for HPC 15 SP7 munge Released
SUSE Linux Enterprise Module for Package Hub 15 SP5 munge Affected
SUSE Linux Enterprise Module for Package Hub 15 SP6 munge Affected
SUSE Linux Enterprise Module for Package Hub 15 SP7 munge Released
openSUSE Leap 15.6 munge Released
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 12 SP5 munge Released
SUSE Linux Enterprise High Performance Computing 15 SP4 munge Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS munge Released
SUSE Linux Enterprise High Performance Computing 15 SP5 munge Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS munge Released
SUSE Linux Enterprise Module for HPC 12 munge Released
SUSE Linux Enterprise Module for HPC 15 SP4 munge Affected
SUSE Linux Enterprise Module for HPC 15 SP5 munge Affected
SUSE Linux Enterprise Server 12 SP5 munge Released
SUSE Linux Enterprise Server 15 SP6-LTSS munge Released
SUSE Linux Enterprise Server for SAP Applications 12 SP5 munge Released
Products past their end of life and not receiving proactive updates anymore.
SUSE Linux Enterprise High Performance Computing 12 SP2 munge Released
SUSE Linux Enterprise High Performance Computing 12 SP3 munge Released
SUSE Linux Enterprise High Performance Computing 12 SP4 munge Released
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS munge Released
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS munge Released
SUSE Linux Enterprise High Performance Computing 15 SP6 munge Affected
SUSE Linux Enterprise Module for HPC 15 SP6 munge Affected
SUSE Linux Enterprise Server 12 SP2 munge Released
SUSE Linux Enterprise Server 12 SP3 munge Released
SUSE Linux Enterprise Server 12 SP4 munge Released
SUSE Linux Enterprise Server for SAP Applications 12 SP2 munge Released
SUSE Linux Enterprise Server for SAP Applications 12 SP3 munge Released
SUSE Linux Enterprise Server for SAP Applications 12 SP4 munge Released
openSUSE Leap 15.4 munge Released
openSUSE Leap 15.5 munge Affected

SUSE Timeline for this CVE

CVE page created: Wed Feb 4 08:15:02 2026
CVE page last modified: Fri Feb 13 01:35:10 2026