CVE-2026-22185: CWE-125 Out-of-bounds Read in OpenLDAP Foundation OpenLDAP
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.
AI Analysis
Technical Summary
OpenLDAP LMDB versions up to 0.9.14 have a heap buffer underflow vulnerability in the readline() function used by mdb_load. When malformed input with an embedded NUL byte is processed, an unsigned offset underflows, causing an out-of-bounds read one byte before the allocated buffer. This can cause mdb_load to crash, leading to denial-of-service. The vulnerability is tracked as CVE-2026-22185 with a CVSS 4.6 (medium) score. No patch or official fix information is currently provided.
Potential Impact
The vulnerability can cause mdb_load to crash due to an out-of-bounds read triggered by specially crafted malformed input. This results in a limited denial-of-service condition affecting systems using vulnerable LMDB versions. There is no indication of code execution or data corruption beyond the crash. No known exploits have been reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid processing untrusted or malformed input with mdb_load to reduce risk of denial-of-service.
CVE-2026-22185: CWE-125 Out-of-bounds Read in OpenLDAP Foundation OpenLDAP
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.
CVSS v4.0
Score 4.6medium
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
OpenLDAP LMDB versions up to 0.9.14 have a heap buffer underflow vulnerability in the readline() function used by mdb_load. When malformed input with an embedded NUL byte is processed, an unsigned offset underflows, causing an out-of-bounds read one byte before the allocated buffer. This can cause mdb_load to crash, leading to denial-of-service. The vulnerability is tracked as CVE-2026-22185 with a CVSS 4.6 (medium) score. No patch or official fix information is currently provided.
Potential Impact
The vulnerability can cause mdb_load to crash due to an out-of-bounds read triggered by specially crafted malformed input. This results in a limited denial-of-service condition affecting systems using vulnerable LMDB versions. There is no indication of code execution or data corruption beyond the crash. No known exploits have been reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid processing untrusted or malformed input with mdb_load to reduce risk of denial-of-service.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-01-06T16:47:17.182Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 695ec6692efadb62cf81402d
Added to database: 01/07/2026, 20:47:37 UTC
Last enriched: 05/26/2026, 07:41:24 UTC
Last updated: 09/10/2026, 19:36:52 UTC
Views: 414
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