CVE-2026-22185
4.6
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
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| OpenLDAP Foundation | OpenLDAP | 0.9.14 < 0.9.34 | affected |
Weaknesses
- CWE-125: CWE-125 Out-of-bounds Read
- CWE-191: CWE-191 Integer Underflow (Wrap or Wraparound)
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: no
- Technical Impact: partial
References
- https://seclists.org/fulldisclosure/2026/Jan/5
- https://seclists.org/fulldisclosure/2026/Jan/8
- https://www.openldap.org/
- https://www.vulncheck.com/advisories/openldap-lmdb-mdb-load-heap-buffer-underflow-in-readline
- https://bugs.openldap.org/show_bug.cgi?id=10421
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