CVE-2026-22185 (GCVE-0-2026-22185)

Vulnerability from cvelistv5 – Published: 2026-01-07 20:26 – Updated: 2026-05-25 23:41
VLAI
Title
OpenLDAP LMDB mdb_load Heap Buffer Underflow in readline()
Summary
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.
Severity
4.6 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-07 21:25 UTC
CWE
  • CWE-125 - Out-of-bounds Read
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
Impacted products
Vendor Product Version CPE status
OpenLDAP Foundation OpenLDAP Affected: 0.9.14 , < 0.9.34 (semver)
    cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Ron Edgerson
Show details on NVD website
To clipboard 

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