CVE-2026-29111

MEDIUMNVD 5.55.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This medium-severity CVE scores 5.5 under NVD CVSS v3. EPSS exploit probability: 0.2% (5th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Trending — 3 sources updated this week
5.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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 v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity55% × 45%
The EG Score, 5.5 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

March 23, 2026

Last Modified

June 17, 2026

Advisory Details (10)

Auto-updated Aug 4, 2026
Patch available. Sources: github_commit.
GitHub commit

commit efa6ba2ab625 (systemd/systemd)

Fix landed in systemd/systemd commit efa6ba2ab625 — awaiting tagged release

https://github.com/systemd/systemd/commit/efa6ba2ab625aaa160ac435a09e6482fc63bdbe8
GitHub commit

commit b5fd14693057 (systemd/systemd)

Fix landed in systemd/systemd commit b5fd14693057 — awaiting tagged release

https://github.com/systemd/systemd/commit/b5fd14693057e5f2c9b4a49603be64ec3608ff6c
GitHub commit

commit 80acea4ef80a (systemd/systemd)

Fix landed in systemd/systemd commit 80acea4ef80a — awaiting tagged release

https://github.com/systemd/systemd/commit/80acea4ef80a4bb78560ed970c34952299b890d6
GitHub commit

commit 7ac322021369 (systemd/systemd)

Fix landed in systemd/systemd commit 7ac322021369 — awaiting tagged release

https://github.com/systemd/systemd/commit/7ac3220213690e8a8d6d2a6e81e43bd1dce01d69
GitHub commit

commit 54588d2dedff (systemd/systemd)

Fix landed in systemd/systemd commit 54588d2dedff — awaiting tagged release

https://github.com/systemd/systemd/commit/54588d2dedff54bfb6036670820650e4ea74628f
GitHub commit

commit 42aee39107fb (systemd/systemd)

Fix landed in systemd/systemd commit 42aee39107fb — awaiting tagged release

https://github.com/systemd/systemd/commit/42aee39107fbdd7db1ccd402a2151822b2805e9f
GitHub commit

commit 3cee294fe8cf (systemd/systemd)

Fix landed in systemd/systemd commit 3cee294fe8cf — awaiting tagged release

https://github.com/systemd/systemd/commit/3cee294fe8cf4fa0eff933ab21416d099942cabd
GitHub commit

commit 21167006574d (systemd/systemd)

Fix landed in systemd/systemd commit 21167006574d — awaiting tagged release

https://github.com/systemd/systemd/commit/21167006574d6b83813c7596759b474f56562412
GitHub commit

commit 20021e768642 (systemd/systemd)

Fix landed in systemd/systemd commit 20021e768642 — awaiting tagged release

https://github.com/systemd/systemd/commit/20021e7686426052e3a7505425d7e12085feb2a6
GitHub commit

commit 1d22f706bd04 (systemd/systemd)

Fix landed in systemd/systemd commit 1d22f706bd04 — awaiting tagged release

https://github.com/systemd/systemd/commit/1d22f706bd04f45f8422e17fbde3f56ece17758a

Vendor Advisories for CVE-2026-29111(20)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(17)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatsystemd-0:252-14.el9_2.112026-08-06redhat
redhatsystemd-0:252-32.el9_4.112026-08-06redhat
redhatsystemd-0:239-58.el8_6.162026-08-04redhat
redhatsystemd-0:239-74.el8_8.72026-08-04redhat
redhatsystemd-0:239-45.el8_4.172026-08-04redhat
redhatsystemd-0:252-51.el9_6.62026-08-04redhat
redhatsystemd-0:257-9.el10_0.22026-06-15redhat
ubuntuudev (257.9-0ubuntu2.3) @ questing2026-06-11ubuntu
ubuntuudev (245.4-4ubuntu3.24+esm3) @ focal2026-06-11ubuntu
redhatinsights-proxy/insights-proxy-container-rhel9:17804204282026-06-02redhat
redhatrhui5/rhua-rhel9:17797982222026-05-27redhat
redhatsystemd-0:252-67.el9_8.22026-05-19redhat
redhatsystemd-0:257-23.el10_2.12026-05-19redhat
redhatrhosdt/opentelemetry-target-allocator-rhel9:17780562452026-05-06redhat
redhatsystemd-0:257-13.el10_1.32026-05-05redhat
redhatsystemd-0:252-55.el9_7.92026-05-05redhat
redhatsystemd-main-260.1-2.1.hum12026-04-09redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
systemd247.3-6 ... 247.3-7+deb11u7 (9 versions)
  • every version up to 247.3-7+deb11u8: fixed in 247.3-7+deb11u8
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
systemd252.11-1 ... 252.6-1+loong64 (31 versions)
  • every version up to 252.39-1~deb12u2: fixed in 252.39-1~deb12u2
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
systemd257.7-1, 257.8-1~deb13u1, 257.8-1~deb13u2, 257.9-1~deb13u1
  • every version up to 257.13-1~deb13u1: fixed in 257.13-1~deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
systemd257.13-1~deb13u1 ... 260~rc1-2 (20 versions)
  • every version up to 260~rc2-1: fixed in 260~rc2-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(18)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 12× in last 7d / 29× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 93 of 206 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 7 repeat rows among the latest 100 are merged into the row they repeat. The 113 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  2. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  3. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  4. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  5. 2026-10-12 16:16 UTCEG score recompute
  6. 2026-10-11 19:58 UTCEG score recompute
  7. 2026-10-11 17:11 UTCEG score recompute
  8. 2026-10-11 14:41 UTCEG score recompute
  9. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  10. 2026-10-11 07:25 UTCOSV refresh
  11. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  13. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  14. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  15. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  16. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  17. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  18. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  20. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  21. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  22. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  23. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  24. 2026-09-21 19:49 UTCOSV refresh
  25. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
Show 68 more
  1. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  3. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  4. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  5. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  6. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  7. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  8. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  9. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  10. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  11. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  12. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  13. 2026-09-02 16:08 UTCOSV refresh
  14. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  15. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  16. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  17. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  18. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  19. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  20. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  21. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  22. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  23. 2026-08-24 14:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  24. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  25. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  26. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  27. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  28. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  29. 2026-08-16 10:44 UTCEG score recompute
  30. 2026-08-16 10:44 UTCVendor advisory
  31. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  32. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  33. 2026-08-14 06:55 UTCEG score recompute
  34. 2026-08-14 06:55 UTCVendor advisory
  35. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  36. 2026-08-12 21:38 UTCEG score recompute
  37. 2026-08-12 21:38 UTCVendor advisory
  38. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  39. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  40. 2026-08-11 06:54 UTCEG score recompute
  41. 2026-08-11 06:54 UTCVendor advisory
  42. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  43. 2026-08-10 06:44 UTCEG score recompute
  44. 2026-08-10 06:44 UTCVendor advisory
  45. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  46. 2026-08-09 06:32 UTCEG score recompute
  47. 2026-08-09 06:32 UTCVendor advisory
  48. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  49. 2026-08-07 16:53 UTCEG score recompute
  50. 2026-08-07 16:53 UTCVendor advisory
  51. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  52. 2026-08-06 01:16 UTCEG score recompute
  53. 2026-08-06 01:16 UTCVendor advisory
  54. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  55. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  56. 2026-08-03 23:59 UTCEG score recompute
  57. 2026-08-03 23:59 UTCVendor advisory
  58. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  59. 2026-08-02 15:53 UTCEG score recompute
  60. 2026-08-02 15:53 UTCVendor advisory
  61. 2026-08-02 02:26 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  62. 2026-07-30 16:27 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  63. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  64. 2026-07-28 15:36 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  65. 2026-07-25 14:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  66. 2026-07-24 14:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  67. 2026-07-23 14:18 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  68. 2026-07-23 03:08 UTCEG score recompute

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-29111?
CVE-2026-29111 is a medium-severity vulnerability; its CVE record was published on March 23, 2026. 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…
When was the CVE record for CVE-2026-29111 published?
The CVE record for CVE-2026-29111 was published on March 23, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of June 17, 2026; the record at its source may have been updated since.
Is CVE-2026-29111 actively exploited?
CVE-2026-29111 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-29111?
CVE-2026-29111 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-29111?
A fix for CVE-2026-29111 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-29111 are linked in the Vendor Advisories panel on this page.

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