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
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

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
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.2%
EPSS %ILE
7th
KEV
Not listed

Published

May 20, 2026

Last Modified

July 24, 2026

Advisory Details (5)

Auto-updated May 20, 2026
Patch available.
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 / EcosystemFix (by version range) / 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 rangeFix by version rangeDependents
haveged—
  • every version up to 1.9.21-r0: fixed in 1.9.21-r0
—
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
haveged—
  • every version up to 1.9.21-r0: fixed in 1.9.21-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
haveged—
  • every version up to 1.9.21-r0: fixed in 1.9.21-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
haveged—
  • every version up to 1.9.21-r0: fixed in 1.9.21-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
haveged—
  • every version up to 1.9.21-r0: fixed in 1.9.21-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
haveged1.9.14-1
  • every version up to 1.9.14-1+deb11u1: fixed in 1.9.14-1+deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
haveged1.9.14-1
  • every version up to 1.9.14-1+deb12u1: fixed in 1.9.14-1+deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
haveged1.9.19-12
  • every version up to 1.9.19-12+deb13u1: fixed in 1.9.19-12+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
haveged1.9.19-12, 1.9.19-13, 1.9.19-14, 1.9.19-15, 1.9.20-1
  • every version up to 1.9.21-1: fixed in 1.9.21-1
—

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 6× in last 7d / 21× 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 286 total refreshes for this CVE.

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

Related CVEs(same CWE)

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 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 0.2% probability of exploitation in the next 30 days (7th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-41054?
CVE-2026-41054 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-41054?
A fix for CVE-2026-41054 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-41054 are linked in the Vendor Advisories panel on this page.

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