CVE-2026-68743

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under NVD CVSS v3. EPSS exploit probability: 0.1% (2nd percentile of EPSS-scored CVEs). GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in SSSD. The extract_authtok_v1() function in the PAM responder does not validate the auth_token_length field against the remaining buffer size before processing. A local attacker can exploit this via a crafted protocol v1 request to the PAM responder socket, causing an out-of-bounds read and process crash, resulting in a denial of service.

CVSS v3
7.1
EG Score
7.1HIGHmedium confidence
EG Risk
32
EG Risk 32/100CISA SSVC

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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
2nd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 4, 2026

Last Modified

August 31, 2026

Advisory Details (2)

Auto-updated Aug 4, 2026
Patch available. Sources: redhat.
redhat

2509760 – (CVE-2026-68743) CVE-2026-68743 sssd: sssd: PAM responder out-of-bounds read via unchecked auth_token_length in protocol v1

https://bugzilla.redhat.com/show_bug.cgi?id=2509760
redhat Patch Available

CVE-2026-68743 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-68743

Vendor Advisories for CVE-2026-68743(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 / EcosystemFix (by version range) / PatchReleasedSource
ubuntusssd-tools (2.2.3-3ubuntu0.13+esm1) @ focal2026-10-04ubuntu

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 rangeFix by version rangeDependents
sssd2.10.1-1 ... 2.9.5-5 (47 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
sssd2.10.1-1 ... 2.9.5-5 (26 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
sssd2.10.1-2 ... 2.13.1-3 (11 versions)
  • every version on: no fix on record
—

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 24× in last 7d / 119× 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 219 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-68743?
CVE-2026-68743 is a high vulnerability published on August 4, 2026. A flaw was found in SSSD. The extractauthtokv1() function in the PAM responder does not validate the authtokenlength field against the remaining buffer size before processing. A local attacker can exploit this via a crafted protocol v1 request to the PAM responder socket, causing an out-of-bounds…
When was CVE-2026-68743 disclosed?
CVE-2026-68743 was first published on August 4, 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-2026-68743 actively exploited?
CVE-2026-68743 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-68743?
CVE-2026-68743 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-68743?
A fix for CVE-2026-68743 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-68743 are linked in the Vendor Advisories panel on this page.

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