CVE-2026-12610

MEDIUMPre-NVD 6.46.4—
EchelonGraph scoreMEDIUM confidence

Score 6.4 from GitHub Security Advisory published 2026-06-30. a secondary CVSS source baseline 6.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A flaw was found in sssd. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free vulnerability, where a memory pointer is incorrectly handled. A local attacker could exploit this flaw by manipulating smartcard or YubiKey contents, leading to a denial of service that disrupts authentication. This vulnerability also presents a potential for privilege escalation, although it is difficult to exploit.

CVSS v3
6.4
EG Score
6.4(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity64% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

June 30, 2026

Last Modified

August 21, 2026

Advisory Details (3)

Auto-updated Jun 30, 2026
Patch available. Sources: redhat.
generic

Use-after-free crash in PAM responder during YubiKey / PKCS#11 authentication · Issue #8796 · SSSD/sssd · GitHub

https://github.com/SSSD/sssd/issues/8796
redhat

2490288 – (CVE-2026-12610) CVE-2026-12610 sssd: Use-after-free crash in SSSD' 'sssd_pam' process

https://bugzilla.redhat.com/show_bug.cgi?id=2490288
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-12610

Vendor Advisories for CVE-2026-12610(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
sssd2.10.1-1 ... 2.9.5-5 (47 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
sssd2.10.1-1 ... 2.9.5-5 (23 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
sssd2.10.1-2 ... 2.12.0-4 (8 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 19× in last 7d / 74× 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 124 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-12610?
CVE-2026-12610 is a medium vulnerability published on June 30, 2026. A flaw was found in sssd. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free vulnerability, where a memory pointer is incorrectly handled. A local attacker could exploit this flaw by manipulating smartcard or YubiKey contents, leading to a denial of service…
When was CVE-2026-12610 disclosed?
CVE-2026-12610 was first published in the National Vulnerability Database on June 30, 2026, with the most recent update on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12610 actively exploited?
CVE-2026-12610 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 97.9% of all scored CVEs.
What is the CVSS score of CVE-2026-12610?
CVE-2026-12610 has a CVSS v3 base score of 6.4 (NVD).
How do I remediate CVE-2026-12610?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12610, 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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