CVE-2026-54411

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

Score 5.9 from GitHub Security Advisory published 2026-06-14. a secondary CVSS source baseline 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 5.9Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Linux-PAM through 1.7.2 contains an observable timing discrepancy (CWE-208) in the pam_userdb module's plaintext-password comparison path in modules/pam_userdb/pam_userdb.c that allows a local or network-adjacent attacker able to repeatedly drive authentication through a calling service to recover the plaintext password of a target account by measuring response-timing differences.

CVSS v3
5.9
EG Score
5.9MEDIUMmedium confidence
EG Risk
27
EG Risk 27/100

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
Severity59% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

Published

June 14, 2026

Last Modified

August 10, 2026

Advisory Details (4)

Auto-updated Jun 15, 2026
Patch available.
generic

CWE - CWE-208: Observable Timing Discrepancy (4.20)

https://cwe.mitre.org/data/definitions/208.html
generic

linux-pam/libpam/include/pam_inline.h at master · linux-pam/linux-pam · GitHub

https://github.com/linux-pam/linux-pam/blob/master/libpam/include/pam_inline.h
generic

linux-pam/modules/pam_userdb/pam_userdb.c at master · linux-pam/linux-pam · GitHub

https://github.com/linux-pam/linux-pam/blob/master/modules/pam_userdb/pam_userdb.c#L327
generic

GitHub - linux-pam/linux-pam: Linux PAM (Pluggable Authentication Modules for Linux) project · GitHub

https://github.com/linux-pam/linux-pam

Vendor Advisories for CVE-2026-54411(20)

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

Patch Availability(15)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibpam0g-dev (1.4.0-11ubuntu2.7) @ jammy2026-09-14ubuntu
redhatpam-0:1.5.1-28.el9_8.12026-09-08redhat
redhatpam-0:1.3.1-14.el8_4.32026-08-31redhat
redhatpam-0:1.5.1-15.el9_2.32026-08-31redhat
redhatpam-0:1.5.1-24.el9_4.22026-08-31redhat
redhatpam-0:1.5.1-26.el9_6.12026-08-31redhat
redhatpam-0:1.3.1-16.el8_6.42026-08-31redhat
redhatpam-0:1.3.1-26.el8_8.32026-08-31redhat
redhatpam-0:1.1.8-23.el7_9.32026-08-31redhat
redhatpam-0:1.6.1-8.el10_0.12026-08-31redhat
redhatpam-0:1.5.1-27.el9_8.12026-08-26redhat
redhatpam-0:1.6.1-9.el10_2.12026-08-25redhat
redhatpam-0:1.3.1-40.el8_102026-08-18redhat
redhatpam-main-1.7.2-2.2.hum12026-07-02redhat
redhatpam-main-1.7.2-1.1.hum12026-04-10redhat

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
pam1.4.0-10 ... 1.7.0-8 (34 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
pam1.5.2-6 ... 1.7.0-8 (24 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
pam1.7.0-5, 1.7.0-6, 1.7.0-7, 1.7.0-8
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
pam1.7.0-5, 1.7.0-6, 1.7.0-7, 1.7.0-8
  • every version on: no fix on record
—

Weakness Classification(1)

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

Additional Vendor Advisories

(10)

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 / 27× 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 264 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 15:18 UTCEPSS rescore
  5. 2026-10-05 17:43 UTCEPSS rescore
  6. 2026-10-04 23:22 UTCEPSS rescore
  7. 2026-10-03 14:26 UTCEPSS rescore
  8. 2026-10-03 08:09 UTCOSV refresh
  9. 2026-10-02 17:56 UTCEPSS rescore
  10. 2026-10-01 19:50 UTCEPSS rescore
  11. 2026-09-30 15:03 UTCEPSS rescore
  12. 2026-09-29 15:22 UTCEPSS rescore
  13. 2026-09-28 13:51 UTCEPSS rescore
  14. 2026-09-27 13:48 UTCEPSS rescore
  15. 2026-09-26 15:59 UTCEPSS rescore
  16. 2026-09-24 14:04 UTCEPSS rescore
  17. 2026-09-23 17:54 UTCEPSS rescore
  18. 2026-09-20 20:16 UTCEPSS rescore
  19. 2026-09-18 19:28 UTCEPSS rescore
  20. 2026-09-17 19:31 UTCEPSS rescore
  21. 2026-09-16 14:08 UTCEPSS rescore
  22. 2026-09-16 05:15 UTCEPSS rescore
  23. 2026-09-14 03:53 UTCEG score recompute
  24. 2026-09-14 03:53 UTCVendor advisory
  25. 2026-09-14 03:53 UTCGHSA enrichment
Show 75 more
  1. 2026-09-13 16:47 UTCEPSS rescore
  2. 2026-09-11 14:53 UTCEPSS rescore
  3. 2026-09-10 09:35 UTCEPSS rescore
  4. 2026-09-08 22:01 UTCEPSS rescore
  5. 2026-09-06 13:47 UTCEPSS rescore
  6. 2026-09-04 05:06 UTCEPSS rescore
  7. 2026-09-02 14:12 UTCEPSS rescore
  8. 2026-09-01 13:54 UTCEPSS rescore
  9. 2026-08-30 23:31 UTCEG score recompute
  10. 2026-08-30 23:31 UTCVendor advisory
  11. 2026-08-30 23:31 UTCGHSA enrichment
  12. 2026-08-30 19:17 UTCEPSS rescore
  13. 2026-08-30 01:22 UTCEPSS rescore
  14. 2026-08-28 21:41 UTCEPSS rescore
  15. 2026-08-27 14:25 UTCEPSS rescore
  16. 2026-08-26 14:46 UTCEPSS rescore
  17. 2026-08-25 13:49 UTCEPSS rescore
  18. 2026-08-24 23:41 UTCEG score recompute
  19. 2026-08-24 23:41 UTCVendor advisory
  20. 2026-08-24 23:41 UTCGHSA enrichment
  21. 2026-08-23 09:52 UTCEG score recompute
  22. 2026-08-23 09:52 UTCVendor advisory
  23. 2026-08-23 09:52 UTCGHSA enrichment
  24. 2026-08-23 00:19 UTCEPSS rescore
  25. 2026-08-21 23:49 UTCEPSS rescore
  26. 2026-08-21 17:48 UTCEG score recompute
  27. 2026-08-21 17:48 UTCVendor advisory
  28. 2026-08-21 17:48 UTCGHSA enrichment
  29. 2026-08-20 22:55 UTCEPSS rescore
  30. 2026-08-20 16:26 UTCEG score recompute
  31. 2026-08-20 16:26 UTCVendor advisory
  32. 2026-08-20 16:26 UTCGHSA enrichment
  33. 2026-08-19 17:04 UTCEPSS rescore
  34. 2026-08-19 13:33 UTCEG score recompute
  35. 2026-08-19 13:33 UTCVendor advisory
  36. 2026-08-19 13:33 UTCGHSA enrichment
  37. 2026-08-18 13:48 UTCEPSS rescore
  38. 2026-08-17 13:47 UTCEPSS rescore
  39. 2026-08-16 22:41 UTCEG score recompute
  40. 2026-08-16 22:41 UTCVendor advisory
  41. 2026-08-16 22:41 UTCGHSA enrichment
  42. 2026-08-16 14:56 UTCEPSS rescore
  43. 2026-08-16 02:14 UTCEPSS rescore
  44. 2026-08-15 16:32 UTCEG score recompute
  45. 2026-08-15 16:32 UTCVendor advisory
  46. 2026-08-15 16:32 UTCGHSA enrichment
  47. 2026-08-15 01:30 UTCEPSS rescore
  48. 2026-08-14 15:43 UTCEG score recompute
  49. 2026-08-14 15:43 UTCVendor advisory
  50. 2026-08-14 15:43 UTCGHSA enrichment
  51. 2026-08-13 22:00 UTCEPSS rescore
  52. 2026-08-13 14:54 UTCVendor advisory
  53. 2026-08-13 14:54 UTCGHSA enrichment
  54. 2026-08-12 14:06 UTCEG score recompute
  55. 2026-08-12 14:06 UTCVendor advisory
  56. 2026-08-12 14:06 UTCGHSA enrichment
  57. 2026-08-12 13:51 UTCEPSS rescore
  58. 2026-08-11 13:13 UTCEG score recompute
  59. 2026-08-11 13:13 UTCVendor advisory
  60. 2026-08-11 13:13 UTCGHSA enrichment
  61. 2026-08-11 00:00 UTCEPSS rescore
  62. 2026-08-10 12:25 UTCEG score recompute
  63. 2026-08-10 12:25 UTCVendor advisory
  64. 2026-08-10 12:25 UTCGHSA enrichment
  65. 2026-08-10 11:43 UTCVendor advisory
  66. 2026-08-10 11:42 UTCGHSA enrichment
  67. 2026-08-10 11:23 UTCVendor advisory
  68. 2026-08-10 11:23 UTCGHSA enrichment
  69. 2026-08-09 17:03 UTCEG score recompute
  70. 2026-08-09 17:03 UTCVendor advisory
  71. 2026-08-09 17:03 UTCGHSA enrichment
  72. 2026-08-09 13:46 UTCEPSS rescore
  73. 2026-08-08 16:37 UTCEPSS rescore
  74. 2026-08-08 16:15 UTCEG score recompute
  75. 2026-08-08 16:15 UTCVendor advisory

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-54411?
CVE-2026-54411 is a medium vulnerability published on June 14, 2026. Linux-PAM through 1.7.2 contains an observable timing discrepancy (CWE-208) in the pamuserdb module's plaintext-password comparison path in modules/pamuserdb/pam_userdb.c that allows a local or network-adjacent attacker able to repeatedly drive authentication through a calling service to recover…
When was CVE-2026-54411 disclosed?
CVE-2026-54411 was first published on June 14, 2026, with the most recent update on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54411 actively exploited?
CVE-2026-54411 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-54411?
CVE-2026-54411 has a CVSS base score of 5.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-54411?
A fix for CVE-2026-54411 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-54411 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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