CVE-2026-22185

MEDIUMPre-NVD 4.64.6—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 97% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
4.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.6Exploit: Elevated riskExposed: 0

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

OpenLDAP Lightning Memory-Mapped Database (LMDB) versions up to and including 0.9.14, prior to commit 8e1fda8, contain a heap buffer underflow in the readline() function of mdb_load. When processing malformed input containing an embedded NUL byte, an unsigned offset calculation can underflow and cause an out-of-bounds read of one byte before the allocated heap buffer. This can cause mdb_load to crash, leading to a limited denial-of-service condition.

CVSS v3
4.6
EG Score
4.6(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity46% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

January 7, 2026

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated Aug 9, 2026
No patch confirmed yet.
generic

OpenLDAP <= 0.9.14 LMDB mdb_load Heap Buffer Underflow in readline() | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openldap-lmdb-mdb-load-heap-buffer-underflow-in-readline
generic

OpenLDAP, Main Page

https://www.openldap.org/
generic

Full Disclosure: MongoDB v8.3.0 Integer Underflow in LMDB mdb_load

https://seclists.org/fulldisclosure/2026/Jan/8
generic

Full Disclosure: MongoDB v8.3.0 Heap Buffer Underflow in OpenLDAP LMDB mdb_load

https://seclists.org/fulldisclosure/2026/Jan/5
generic

10421 – mdb_load can crash on malicious input

https://bugs.openldap.org/show_bug.cgi?id=10421

Vendor Advisories for CVE-2026-22185(1)

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

Affected Packages

(8 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
lmdb0.9.24-1, 0.9.31-1, 0.9.35-1——
openldap1:1.2.12-1 ... 2:1.2.12.1-1.0.1 (49 versions)——
Debian:12(2)
PackageVulnerable rangeFixed inDependents
lmdb0.9.24-1, 0.9.31-1, 0.9.35-1——
openldap1:1.2.12-1 ... 2:1.2.12.1-1.0.1 (32 versions)——
Debian:13(2)
PackageVulnerable rangeFixed inDependents
lmdb0.9.31-1, 0.9.35-1——
openldap1:1.2.12-1 ... 2:1.2.12.1-1.0.1 (7 versions)——
Debian:14(2)
PackageVulnerable rangeFixed inDependents
lmdb0.9.31-1, 0.9.35-1——
openldap1:1.2.12-1 ... 2:1.2.12.1-1.0.1 (7 versions)——

Weakness Classification(2)

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

Data Freshness Timeline

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-22185?
CVE-2026-22185 is a medium vulnerability published on January 7, 2026. OpenLDAP Lightning Memory-Mapped Database (LMDB) versions up to and including 0.9.14, prior to commit 8e1fda8, contain a heap buffer underflow in the readline() function of mdbload. When processing malformed input containing an embedded NUL byte, an unsigned offset calculation can underflow and…
When was CVE-2026-22185 disclosed?
CVE-2026-22185 was first published in the National Vulnerability Database on January 7, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-22185 actively exploited?
CVE-2026-22185 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 95.7% of all scored CVEs.
What is the CVSS score of CVE-2026-22185?
CVE-2026-22185 has a CVSS v3 base score of 4.6 (NVD).
How do I remediate CVE-2026-22185?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-22185, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-22185

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