5.5

CVE-2026-29111: systemd_project systemd Improper Privilege Management

CVSS: 5.5v3.1MediumAnalyzed
AliasesRHSA-2026:13651RHSA-2026:13677RHSA-2026:19068
Published 23-03-2026Last modified 25-03-2026
Open JSON

Vulnerability summary

CVE-2026-29111 is a medium (CVSS 5.5) Improper Privilege Management vulnerability in systemd_project systemd. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.4% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.17%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 15 · Related 15
OPENSUSE-SU-2026:10624-1OPENSUSE-SU-2026:20471-1OPENSUSE-SU-2026:21754-1RHSA-2026:7299SUSE-SU-2026:0990-1SUSE-SU-2026:1040-1

Timeline

  1. 23-03-2026
    PublishedVulnerability first disclosed.
  2. 25-03-2026
    Last modifiedVulnerability information updated.

Description

systemd, a system and service manager, (as PID 1) hits an assert and freezes execution when an unprivileged IPC API call is made with spurious data. On version v249 and older the effect is not an assert, but stack overwriting, with the attacker controlled content. From version v250 and newer this is not possible as the safety check causes an assert instead. This IPC call was added in v239, so versions older than that are not affected. Versions 260-rc1, 259.2, 258.5, and 257.11 contain patches. No known workarounds are available.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

+0.05 pp

From 0.12% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.17%

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

Redhat27 products
  • rhel-net-naming-sysattrs< 0:252-55.el9_7.9 | < 0:252-67.el9_8.2 | < 0:252-51.el9_6.6 | < 0:252-32.el9_4.11 | < 0:252-14.el9_2.11
  • systemd< 0:257-13.el10_1.3 | < 0:252-55.el9_7.9 | < 0:257-23.el10_2.1 | < 0:252-67.el9_8.2 | < 0:257-9.el10_0.2 | < 0:252-51.el9_6.6 | < 0:239-74.el8_8.7 | < 0:239-45.el8_4.17 | < 0:239-58.el8_6.16 | < 0:252-32.el9_4.11 | < 0:252-14.el9_2.11
  • systemd-boot-unsigned< 0:257-13.el10_1.3 | < 0:252-55.el9_7.9 | < 0:257-23.el10_2.1 | < 0:252-67.el9_8.2 | < 0:257-9.el10_0.2 | < 0:252-51.el9_6.6
  • systemd-boot-unsigned-debuginfo< 0:252-55.el9_7.9 | < 0:252-67.el9_8.2 | < 0:252-51.el9_6.6 | < 0:252-32.el9_4.11 | < 0:252-14.el9_2.11
  • systemd-container< 0:257-13.el10_1.3 | < 0:252-55.el9_7.9 | < 0:257-23.el10_2.1 | < 0:252-67.el9_8.2 | < 0:257-9.el10_0.2 | < 0:252-51.el9_6.6 | < 0:239-74.el8_8.7 | < 0:239-45.el8_4.17 | < 0:239-58.el8_6.16 | < 0:252-32.el9_4.11 | < 0:252-14.el9_2.11
Debian1 product
  • systemd< 252.39-1~deb12u2 | < 257.13-1~deb13u1 | < 260~rc2-1
Systemd1 product
  • systemd≥ 239, < 257.11 | ≥ 258, < 258.5 | ≥ 259, < 259.2
Systemd_project1 product
  • systemd≥ 239, < 257.11 | ≥ 258, < 258.5 | ≥ 259, < 259.2
Ubuntu1 product
  • systemd< 245.4-4ubuntu3.24+esm3 | < 249.11-0ubuntu3.19 | < 255.4-1ubuntu8.14 | < 257.9-0ubuntu2.3

5 vendors · 31 products

References

43 links
Show all 43 references