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
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 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
35(Track)
EG Risk 35/100SSVC: Track

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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

May 20, 2026

Last Modified

July 24, 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 (1.9.19-12+deb13u1build0.25.10.1) @ questing2026-08-23ubuntu

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

(9 across 9 ecosystems)
Alpine:v3.20(1)
PackageVulnerable rangeFixed inDependents
haveged—1.9.21-r0—
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
haveged—1.9.21-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
haveged—1.9.21-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
haveged—1.9.21-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
haveged—1.9.21-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
haveged1.9.14-11.9.14-1+deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
haveged1.9.14-11.9.14-1+deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
haveged1.9.19-121.9.19-12+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
haveged1.9.19-12, 1.9.19-13, 1.9.19-14, 1.9.19-15, 1.9.20-11.9.21-1—

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 14× in last 7d / 94× 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 252 total refreshes for this CVE.

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

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 July 24, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 92.0% of all scored CVEs.
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

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