CVE-2026-41054

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-20. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

A fix is available — apply it.

In src/havegecmd.c, the socket_handler function performs a credential check on the abstract UNIX socket (\0/sys/entropy/haveged). However, while it detects if the connecting user is not root (cred.uid != 0) and prepares a negative acknowledgement (ASCII_NAK), it fails to stop execution. The code proceeds to the switch statement, allowing any local unprivileged user to execute privileged commands such as MAGIC_CHROOT.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
8.2%
KEV
Not listed

Published

May 20, 2026

Last Modified

June 5, 2026

Advisory Details (5)

Auto-updated May 20, 2026
No patch confirmed yet.
generic

oss-security - CVE-2026-41054: haveged — privilege escalation via command socket

http://www.openwall.com/lists/oss-security/2026/05/20/1
generic

oss-security - Re: Fixed: local root exploit in haveged, fixed in 1.9.21, CVE-2026-41054

http://www.openwall.com/lists/oss-security/2026/05/19/5
generic

oss-security - Re: Fixed: local root exploit in haveged, fixed in 1.9.21, CVE-2026-41054

http://www.openwall.com/lists/oss-security/2026/05/19/4
generic

oss-security - Fixed: local root exploit in haveged, fixed in 1.9.21, CVE-2026-41054

http://www.openwall.com/lists/oss-security/2026/05/19/3
generic

1264086 – (CVE-2026-41054) VUL-0: CVE-2026-41054: haveged: missing exit out of permission check could lead to root exploit

https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-41054

Vendor Advisories for CVE-2026-41054(2)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibhavege2 (1.9.14-1ubuntu1+esm1~22.04.1) @ jammy2026-06-29ubuntu

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.

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 87× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 174 total refreshes for this CVE.

  1. 2026-07-09 19:10 UTCEPSS rescore
  2. 2026-07-08 15:15 UTCEPSS rescore
  3. 2026-07-07 13:46 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 16:27 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 06:31 UTCEPSS rescore
  10. 2026-07-01 15:06 UTCEPSS rescore
  11. 2026-06-30 23:22 UTCEPSS rescore
  12. 2026-06-29 20:30 UTCEG score recompute
  13. 2026-06-29 20:30 UTCVendor advisory
  14. 2026-06-29 20:30 UTCGHSA enrichment
  15. 2026-06-29 14:06 UTCEPSS rescore
  16. 2026-06-28 14:07 UTCEPSS rescore
  17. 2026-06-28 10:47 UTCEG score recompute
  18. 2026-06-28 10:47 UTCVendor advisory
  19. 2026-06-28 10:47 UTCGHSA enrichment
  20. 2026-06-28 04:56 UTCEPSS rescore
  21. 2026-06-27 21:18 UTCEG score recompute
  22. 2026-06-27 21:18 UTCVendor advisory
  23. 2026-06-27 21:18 UTCGHSA enrichment
  24. 2026-06-27 08:24 UTCEG score recompute
  25. 2026-06-27 08:24 UTCVendor advisory
Show 75 more
  1. 2026-06-27 08:24 UTCGHSA enrichment
  2. 2026-06-27 03:08 UTCEPSS rescore
  3. 2026-06-26 19:35 UTCEG score recompute
  4. 2026-06-26 19:35 UTCVendor advisory
  5. 2026-06-26 19:35 UTCGHSA enrichment
  6. 2026-06-26 05:06 UTCEG score recompute
  7. 2026-06-26 05:06 UTCVendor advisory
  8. 2026-06-26 05:06 UTCGHSA enrichment
  9. 2026-06-25 16:14 UTCEG score recompute
  10. 2026-06-25 16:14 UTCVendor advisory
  11. 2026-06-25 16:14 UTCGHSA enrichment
  12. 2026-06-25 13:49 UTCEPSS rescore
  13. 2026-06-25 13:49 UTCEPSS rescore
  14. 2026-06-24 14:05 UTCEPSS rescore
  15. 2026-06-23 21:33 UTCEPSS rescore
  16. 2026-06-22 14:25 UTCEPSS rescore
  17. 2026-06-22 14:25 UTCEPSS rescore
  18. 2026-06-21 14:56 UTCEPSS rescore
  19. 2026-06-21 14:56 UTCEPSS rescore
  20. 2026-06-21 01:59 UTCEPSS rescore
  21. 2026-06-19 19:25 UTCEPSS rescore
  22. 2026-06-18 17:52 UTCEPSS rescore
  23. 2026-06-18 17:52 UTCEPSS rescore
  24. 2026-06-18 02:02 UTCEG score recompute
  25. 2026-06-18 02:02 UTCVendor advisory
  26. 2026-06-18 02:02 UTCGHSA enrichment
  27. 2026-06-17 17:53 UTCEPSS rescore
  28. 2026-06-17 11:26 UTCEG score recompute
  29. 2026-06-17 11:26 UTCVendor advisory
  30. 2026-06-17 11:26 UTCGHSA enrichment
  31. 2026-06-16 20:15 UTCEG score recompute
  32. 2026-06-16 20:15 UTCVendor advisory
  33. 2026-06-16 20:15 UTCGHSA enrichment
  34. 2026-06-16 17:52 UTCEPSS rescore
  35. 2026-06-16 04:53 UTCEG score recompute
  36. 2026-06-16 04:53 UTCVendor advisory
  37. 2026-06-16 04:53 UTCGHSA enrichment
  38. 2026-06-15 17:49 UTCEPSS rescore
  39. 2026-06-15 15:51 UTCEG score recompute
  40. 2026-06-15 15:51 UTCVendor advisory
  41. 2026-06-15 15:51 UTCGHSA enrichment
  42. 2026-06-15 00:15 UTCEG score recompute
  43. 2026-06-15 00:15 UTCVendor advisory
  44. 2026-06-15 00:15 UTCGHSA enrichment
  45. 2026-06-14 11:26 UTCEG score recompute
  46. 2026-06-14 11:26 UTCVendor advisory
  47. 2026-06-14 11:26 UTCGHSA enrichment
  48. 2026-06-13 23:00 UTCEPSS rescore
  49. 2026-06-13 22:37 UTCEG score recompute
  50. 2026-06-13 22:37 UTCVendor advisory
  51. 2026-06-13 22:37 UTCGHSA enrichment
  52. 2026-06-13 09:48 UTCEG score recompute
  53. 2026-06-13 09:48 UTCVendor advisory
  54. 2026-06-13 09:48 UTCGHSA enrichment
  55. 2026-06-12 23:12 UTCEPSS rescore
  56. 2026-06-12 23:12 UTCEPSS rescore
  57. 2026-06-12 20:59 UTCEG score recompute
  58. 2026-06-12 20:59 UTCVendor advisory
  59. 2026-06-12 20:58 UTCGHSA enrichment
  60. 2026-06-12 08:09 UTCEG score recompute
  61. 2026-06-12 08:09 UTCVendor advisory
  62. 2026-06-12 08:09 UTCGHSA enrichment
  63. 2026-06-11 19:20 UTCEG score recompute
  64. 2026-06-11 19:20 UTCVendor advisory
  65. 2026-06-11 19:20 UTCGHSA enrichment
  66. 2026-06-11 14:00 UTCEPSS rescore
  67. 2026-06-11 06:31 UTCEG score recompute
  68. 2026-06-11 06:31 UTCVendor advisory
  69. 2026-06-11 06:31 UTCGHSA enrichment
  70. 2026-06-10 17:42 UTCEG score recompute
  71. 2026-06-10 17:42 UTCVendor advisory
  72. 2026-06-10 17:42 UTCGHSA enrichment
  73. 2026-06-10 13:22 UTCEPSS rescore
  74. 2026-06-10 13:22 UTCEPSS rescore
  75. 2026-06-10 04:53 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-41054?
CVE-2026-41054 is a high vulnerability published on May 20, 2026. In src/havegecmd.c, the sockethandler function performs a credential check on the abstract UNIX socket (\0/sys/entropy/haveged). However, while it detects if the connecting user is not root (cred.uid != 0) and prepares a negative acknowledgement (ASCIINAK), it fails to stop execution. The code…
When was CVE-2026-41054 disclosed?
CVE-2026-41054 was first published in the National Vulnerability Database on May 20, 2026, with the most recent update on June 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41054 actively exploited?
CVE-2026-41054 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-41054?
CVE-2026-41054 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-41054?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41054, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-41054

Explore →

Is Your Infrastructure Affected by CVE-2026-41054?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs