CVE-2026-22185
OpenLDAP LMDB mdb_load Heap Buffer Underflow in readline()
Description
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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:LAccess VectorLocal
AC:LAccess ComplexityLow
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:LAvailabilityL
Weaknesses
Affected Products
OpenLDAP Foundation
oss-projectaka openldap, openldap.org
АО «ИВК»
commercial·RUaka ivk
ООО «Ред Софт»
commercial·RUaka red soft
АО «СберТех»
commercial·RUaka сбертех, ao sbertech
OpenLDAP
oss-projectaka openldap-servers
Exploitability
Official Patch Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
2 techniques Collection
Initial Access
References
https://seclists.org/fulldisclosure/2026/Jan/5
seclists.org
https://seclists.org/fulldisclosure/2026/Jan/8
seclists.org
https://www.openldap.org/
openldap.org
and 12 more references View all →
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