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)
EG Risk
—
EPSS
8.3%
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 7× in last 7d / 47× 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 149 total refreshes for this CVE.

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

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 8.3% 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.

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