7.8

CVE-2026-25506: debian debian_linux Out-of-bounds Write

CVSS: 7.8v3.1HighModified
AliasesSUSE-SU-2026:0448-1SUSE-SU-2026:0450-1SUSE-SU-2026:0451-1
Published 10-02-2026Last modified 15-07-2026
Open JSON

Vulnerability summary

CVE-2026-25506 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 22% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.31%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 10-02-2026
    PublishedVulnerability first disclosed.
  2. 15-07-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.31%

Chance of exploitation in the next 30 days

Percentile

22%

Versus all other CVEs

30-day change

0.00 pp

From 0.31% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.31%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Suse8 products
  • munge&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS< 0.5.15-150400.18.10.1
  • munge&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS< 0.5.15-150400.18.10.1
  • munge&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS< 0.5.15-150400.18.10.1
  • munge&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS< 0.5.15-150400.18.10.1
  • munge&distro=SUSE Linux Enterprise Module for HPC 12< 0.5.14-3.11.1
Redhat6 products
  • munge< 0:0.5.13-13.el9_6.1 | < 0:0.5.13-13.el9_4.1 | < 0:0.5.13-13.el9_2.1 | < 0:0.5.13-13.el9_0.1 | < 0:0.5.15-10.el10_0.1 | < 0:0.5.13-2.el8_4.1 | < 0:0.5.13-1.el8_2.1 | < 0:0.5.13-2.el8_8.1 | < 0:0.5.13-2.el8_6.1 | < 0:0.5.13-3.el8_10 | < 0:0.5.15-11.el10_1 | < 0:0.5.13-14.el9_7
  • munge-debuginfo< 0:0.5.13-13.el9_6.1 | < 0:0.5.13-13.el9_4.1 | < 0:0.5.13-13.el9_2.1 | < 0:0.5.13-13.el9_0.1 | < 0:0.5.15-10.el10_0.1 | < 0:0.5.13-2.el8_4.1 | < 0:0.5.13-1.el8_2.1 | < 0:0.5.13-2.el8_8.1 | < 0:0.5.13-2.el8_6.1 | < 0:0.5.13-3.el8_10 | < 0:0.5.15-11.el10_1 | < 0:0.5.13-14.el9_7
  • munge-debugsource< 0:0.5.13-13.el9_6.1 | < 0:0.5.13-13.el9_4.1 | < 0:0.5.13-13.el9_2.1 | < 0:0.5.13-13.el9_0.1 | < 0:0.5.15-10.el10_0.1 | < 0:0.5.13-2.el8_4.1 | < 0:0.5.13-1.el8_2.1 | < 0:0.5.13-2.el8_8.1 | < 0:0.5.13-2.el8_6.1 | < 0:0.5.13-3.el8_10 | < 0:0.5.15-11.el10_1 | < 0:0.5.13-14.el9_7
  • munge-devel< 0:0.5.13-13.el9_6.1 | < 0:0.5.13-13.el9_4.1 | < 0:0.5.15-10.el10_0.1 | < 0:0.5.13-3.el8_10 | < 0:0.5.15-11.el10_1 | < 0:0.5.13-14.el9_7
  • munge-libs< 0:0.5.13-13.el9_6.1 | < 0:0.5.13-13.el9_4.1 | < 0:0.5.13-13.el9_2.1 | < 0:0.5.13-13.el9_0.1 | < 0:0.5.15-10.el10_0.1 | < 0:0.5.13-2.el8_4.1 | < 0:0.5.13-1.el8_2.1 | < 0:0.5.13-2.el8_8.1 | < 0:0.5.13-2.el8_6.1 | < 0:0.5.13-3.el8_10 | < 0:0.5.15-11.el10_1 | < 0:0.5.13-14.el9_7
Opensuse3 products
  • munge≥ 0.5, < 0.5.18
  • munge&distro=openSUSE Leap 15.6< 0.5.15-150600.25.6.1
  • munge&distro=openSUSE Tumbleweed< 0.5.18-1.1
Debian2 products
  • munge< 0.5.16-1.1 | < 0.5.15-2+deb12u1 | < 0.5.16-1.1~deb13u1 | < 0.5.14-4+deb11u1
  • debian_linuxEOL11.0
Dun1 product
Ubuntu1 product
  • munge< 0.5.11-1ubuntu1.1+esm1 | < 0.5.11-3ubuntu0.1+esm1 | < 0.5.13-1ubuntu0.1~esm1 | < 0.5.13-2ubuntu0.1~esm1 | < 0.5.14-6ubuntu0.1 | < 0.5.15-4ubuntu0.1 | < 0.5.16-1ubuntu0.1

6 vendors · 21 products

References

47 links
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