CVE-2026-56968

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 79% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

GNU SASL before 2.2.4 lacks sanitization of a short challenge in _gsasl_ntlm_client_step in the NTLM client, which could result in memory disclosure via a crafted server.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

June 23, 2026

Last Modified

July 31, 2026

Advisory Details (3)

Auto-updated Jun 30, 2026
No patch confirmed yet.
generic

[security] gsasl NTLM client: heap memory disclosure via short server ch

https://lists.gnu.org/archive/html/help-gsasl/2026-06/msg00000.html
generic

[SECURITY] [DSA 6348-1] gsasl security update

https://lists.debian.org/debian-security-announce/2026/msg00259.html
generic

Index of /gnu/gsasl

https://ftp.gnu.org/gnu/gsasl/

Vendor Advisories for CVE-2026-56968(1)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
gsasl1.10.0-4, 1.10.0-4+deb11u1, 1.10.0-4+deb11u21.10.0-4+deb11u3—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
gsasl2.2.0-1, 2.2.0-1+deb12u12.2.0-1+deb12u2—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
gsasl2.2.2-1.1, 2.2.2-1.1+deb13u12.2.2-1.1+deb13u2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
gsasl2.2.2-1.1, 2.2.2-2, 2.2.2-3, 2.2.2-4, 2.2.3-12.2.4-1—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 78× 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 137 total refreshes for this CVE.

  1. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-24 14:01 UTCEG score recompute
  3. 2026-08-24 14:01 UTCGHSA enrichment
  4. 2026-08-23 13:55 UTCEG score recompute
  5. 2026-08-23 13:55 UTCGHSA enrichment
  6. 2026-08-23 00:19 UTCEPSS rescore
  7. 2026-08-22 13:49 UTCEG score recompute
  8. 2026-08-22 13:49 UTCGHSA enrichment
  9. 2026-08-21 23:49 UTCEPSS rescore
  10. 2026-08-21 07:51 UTCEG score recompute
  11. 2026-08-21 07:51 UTCGHSA enrichment
  12. 2026-08-20 22:55 UTCEPSS rescore
  13. 2026-08-20 07:46 UTCEG score recompute
  14. 2026-08-20 07:46 UTCGHSA enrichment
  15. 2026-08-19 17:04 UTCEPSS rescore
  16. 2026-08-19 04:49 UTCEG score recompute
  17. 2026-08-19 04:49 UTCGHSA enrichment
  18. 2026-08-18 13:48 UTCEPSS rescore
  19. 2026-08-17 13:47 UTCEPSS rescore
  20. 2026-08-16 20:13 UTCEG score recompute
  21. 2026-08-16 20:13 UTCGHSA enrichment
  22. 2026-08-16 14:56 UTCEPSS rescore
  23. 2026-08-16 02:14 UTCEPSS rescore
  24. 2026-08-15 19:10 UTCEG score recompute
  25. 2026-08-15 19:10 UTCGHSA enrichment
Show 75 more
  1. 2026-08-15 01:30 UTCEPSS rescore
  2. 2026-08-14 19:01 UTCEG score recompute
  3. 2026-08-14 19:01 UTCGHSA enrichment
  4. 2026-08-13 22:00 UTCEPSS rescore
  5. 2026-08-13 18:55 UTCGHSA enrichment
  6. 2026-08-12 18:50 UTCEG score recompute
  7. 2026-08-12 18:50 UTCGHSA enrichment
  8. 2026-08-12 13:51 UTCEPSS rescore
  9. 2026-08-11 18:44 UTCEG score recompute
  10. 2026-08-11 18:44 UTCGHSA enrichment
  11. 2026-08-11 00:00 UTCEPSS rescore
  12. 2026-08-10 18:39 UTCGHSA enrichment
  13. 2026-08-09 17:50 UTCEG score recompute
  14. 2026-08-09 17:50 UTCGHSA enrichment
  15. 2026-08-09 13:46 UTCEPSS rescore
  16. 2026-08-08 17:45 UTCEG score recompute
  17. 2026-08-08 17:45 UTCGHSA enrichment
  18. 2026-08-08 16:37 UTCEPSS rescore
  19. 2026-08-07 17:38 UTCEG score recompute
  20. 2026-08-07 17:38 UTCGHSA enrichment
  21. 2026-08-06 17:32 UTCEG score recompute
  22. 2026-08-06 17:32 UTCGHSA enrichment
  23. 2026-08-06 13:47 UTCEPSS rescore
  24. 2026-08-05 19:17 UTCEPSS rescore
  25. 2026-08-05 17:26 UTCGHSA enrichment
  26. 2026-08-04 15:14 UTCEG score recompute
  27. 2026-08-04 15:14 UTCGHSA enrichment
  28. 2026-08-04 15:10 UTCEPSS rescore
  29. 2026-08-04 10:39 UTCEPSS rescore
  30. 2026-08-03 10:36 UTCEPSS rescore
  31. 2026-08-03 07:58 UTCGHSA enrichment
  32. 2026-08-02 07:51 UTCEG score recompute
  33. 2026-08-02 07:51 UTCGHSA enrichment
  34. 2026-08-02 02:27 UTCEPSS rescore
  35. 2026-08-01 07:45 UTCEG score recompute
  36. 2026-08-01 07:45 UTCGHSA enrichment
  37. 2026-08-01 04:16 UTCEPSS rescore
  38. 2026-07-31 06:22 UTCGHSA enrichment
  39. 2026-07-31 05:18 UTCEG score recompute
  40. 2026-07-31 05:18 UTCGHSA enrichment
  41. 2026-07-31 03:39 UTCEG score recompute
  42. 2026-07-31 03:39 UTCGHSA enrichment
  43. 2026-07-30 16:28 UTCEPSS rescore
  44. 2026-07-30 02:35 UTCEG score recompute
  45. 2026-07-30 02:35 UTCGHSA enrichment
  46. 2026-07-30 01:30 UTCEPSS rescore
  47. 2026-07-30 01:30 UTCEPSS rescore
  48. 2026-07-29 01:15 UTCEG score recompute
  49. 2026-07-29 01:15 UTCGHSA enrichment
  50. 2026-07-28 15:37 UTCEPSS rescore
  51. 2026-07-27 17:46 UTCEG score recompute
  52. 2026-07-27 17:46 UTCGHSA enrichment
  53. 2026-07-27 14:14 UTCEPSS rescore
  54. 2026-07-26 15:53 UTCEG score recompute
  55. 2026-07-26 15:53 UTCGHSA enrichment
  56. 2026-07-26 14:54 UTCEPSS rescore
  57. 2026-07-26 14:54 UTCEPSS rescore
  58. 2026-07-25 14:18 UTCEPSS rescore
  59. 2026-07-25 14:18 UTCEPSS rescore
  60. 2026-07-24 14:18 UTCEPSS rescore
  61. 2026-07-24 14:18 UTCEPSS rescore
  62. 2026-07-23 14:18 UTCEPSS rescore
  63. 2026-07-23 03:20 UTCEG score recompute▲ 1.60
  64. 2026-07-22 14:08 UTCEPSS rescore
  65. 2026-07-21 15:25 UTCEPSS rescore
  66. 2026-07-20 17:08 UTCEPSS rescore
  67. 2026-07-19 02:29 UTCEPSS rescore
  68. 2026-07-18 10:04 UTCEPSS rescore
  69. 2026-07-16 17:03 UTCEPSS rescore
  70. 2026-07-15 16:57 UTCEPSS rescore
  71. 2026-07-15 16:57 UTCEPSS rescore
  72. 2026-07-15 02:00 UTCEPSS rescore
  73. 2026-07-15 02:00 UTCEPSS rescore
  74. 2026-07-15 01:23 UTCGHSA enrichment
  75. 2026-07-13 22:31 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-56968?
CVE-2026-56968 is a medium vulnerability published on June 23, 2026. GNU SASL before 2.2.4 lacks sanitization of a short challenge in gsaslntlmclientstep in the NTLM client, which could result in memory disclosure via a crafted server.
When was CVE-2026-56968 disclosed?
CVE-2026-56968 was first published in the National Vulnerability Database on June 23, 2026, with the most recent update on July 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56968 actively exploited?
CVE-2026-56968 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 79.5% of all scored CVEs.
What is the CVSS score of CVE-2026-56968?
CVE-2026-56968 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-56968?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56968, 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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