CVE-2026-9064

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-20. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.5Exploit: NoneExposed: 0

A fix is available — apply it.

A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls within the default maximum BER message size (2 MB), causing excessive CPU consumption and heap allocation on the server. Under concurrent exploitation, this leads to significant latency degradation, worker thread starvation, or out-of-memory termination, resulting in a denial of service.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
53.3%
KEV
Not listed

Published

May 20, 2026

Last Modified

July 23, 2026

Advisory Details (2)

Auto-updated May 20, 2026
Patch available. Sources: redhat.
redhat

2480093 – (CVE-2026-9064) CVE-2026-9064 389-ds-base: 389-ds-base: unbounded LDAP controls count in get_ldapmessage_controls_ext() causes CPU and heap amplification (remote DoS)

https://bugzilla.redhat.com/show_bug.cgi?id=2480093
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-9064

Vendor Advisories for CVE-2026-9064(18)

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

Patch Availability(17)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatdirsrv/dirsrv-container-rhel10:17817141232026-06-18redhat
redhat389-ds-base-0:2.8.0-7.el9_82026-06-17redhat
redhat389-ds-base-0:3.2.0-7.el10_22026-06-17redhat
redhat389-ds-base-0:3.0.6-18.el10_02026-06-17redhat
redhat389-ds-base-0:2.2.4-18.el9_22026-06-17redhat
redhat389-ds-base-0:2.4.5-25.el9_42026-06-17redhat
redhat389-ds-base-0:2.6.1-21.el9_62026-06-17redhat
redhatredhat-ds:11-8060020260609102432.0ca98e7e2026-06-17redhat
redhatredhat-ds:11-8100020260601104139.37ed7c032026-06-17redhat
redhat389-ds-base-0:1.3.11.1-12.el7_92026-06-17redhat
redhat389-ds:1.4-8100020260601102239.25e700aa2026-06-17redhat
redhat389-ds:1.4-8040020260609102422.96015a922026-06-17redhat
redhat389-ds:1.4-8060020260609102416.824efc522026-06-17redhat
redhatredhat-ds:11-8080020260610130252.f969626e2026-06-17redhat
redhatredhat-ds:12-9020020260615123354.1674d5742026-06-17redhat
redhat389-ds:1.4-8080020260610125847.6dbb38032026-06-17redhat
redhatredhat-ds:12-9040020260611130021.1674d5742026-06-17redhat

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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 47× 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 120 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-9064?
CVE-2026-9064 is a high vulnerability published on May 20, 2026. A flaw was found in 389-ds-base. The getldapmessagecontrols_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls…
When was CVE-2026-9064 disclosed?
CVE-2026-9064 was first published in the National Vulnerability Database on May 20, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9064 actively exploited?
CVE-2026-9064 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 53.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-9064?
CVE-2026-9064 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-9064?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9064, 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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