CVE-2026-11774

HIGHPre-NVD 7.67.6—
EchelonGraph scoreHIGH confidence

Score 7.6 from GitHub Security Advisory (severity: HIGH) published 2026-06-11. the CNA's CVSS baseline 7.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:redhat, epss, ghsa
Trending — 3 sources updated this week
7.6
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.6Exploit: NoneExposed: 0

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

An integer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). In sasl_io_start_packet(), adding sizeof(uint32_t) to a crafted SASL packet length prefix of 0xFFFFFFFC causes unsigned wraparound to zero, bypassing the nsslapd-maxsasliosize limit and leading to a heap buffer overflow of up to approximately 2 megabytes of attacker-controlled data. After a successful SASL bind with integrity protection (SSF > 0), a remote attacker can cause a Denial of Service (DoS) or achieve Remote Code Execution (RCE). In FreeIPA and Red Hat Identity Management deployments, any domain user with a valid Kerberos ticket, enrolled host, or service account can trigger this vulnerability over the network. This flaw is independent of CVE-2025-14905, which patched schema.c only and did not modify sasl_io.c.

CVSS v3
7.6
EG Score
7.6(high)
EPSS
41.4%
KEV
Not listed

Published

June 11, 2026

Last Modified

June 30, 2026

Advisory Details (3)

Auto-updated Jun 11, 2026
Patch available. Sources: redhat.
generic

Jira

https://redhat.atlassian.net/browse/PSIRTSUPT-7600
redhat

2484916 – (CVE-2026-11774) CVE-2026-11774 389-ds-base: 389-ds-base: integer overflow in SASL packet length bypasses size limit leading to heap buffer overflow

https://bugzilla.redhat.com/show_bug.cgi?id=2484916
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-11774

Vendor Advisories for CVE-2026-11774(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 34× in last 7d / 127× 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 127 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-11774?
CVE-2026-11774 is a high vulnerability published on June 11, 2026. An integer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). In sasliostartpacket(), adding sizeof(uint32t) to a crafted SASL packet length prefix of 0xFFFFFFFC causes unsigned wraparound to zero, bypassing the nsslapd-maxsasliosize limit and leading to a heap…
When was CVE-2026-11774 disclosed?
CVE-2026-11774 was first published in the National Vulnerability Database on June 11, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11774 actively exploited?
CVE-2026-11774 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 41.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-11774?
CVE-2026-11774 has a CVSS v4.0 base score of 7.6 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-11774?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11774, 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.

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