CVE-2026-22185
Medium
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.
SeverityMedium
CVSS4.6
Exploit probability—
ProductOpenLDAP
PublishedJan 7, 2026
First seenJan 7, 2026
Weakness typeCWE-125Out-of-bounds readCWE-191CWE-191
How to fix
Update
- OpenLDAP Foundation OpenLDAP0.9.34 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| OpenLDAP Foundation OpenLDAP | 0.9.14 ≤ v < 0.9.34 | 0.9.34 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.