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 — 4 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

A fix is available — apply it.

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 31, 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.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntusssd-tools (2.12.0-1ubuntu5.3) @ resolute2026-09-18ubuntu

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

(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.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 13× in last 7d / 56× 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 164 total refreshes for this CVE.

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

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 31, 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 97.8% 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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