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CVE-2026-22185

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:35be28b2fbe0a1decbcfe9d473e46aeec26b0f2a1b420471d90f32f54ca3ab82
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-191","description":"CWE-191 Integer Underflow (Wrap or Wraparound)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:69d5099894df021afe64fdb9125d5cd38d658251649c2c0176b897cd6021a043 · sha256:39a9cfbf786f3ba3… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-125","description":"CWE-125 Out-of-bounds Read","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:69d5099894df021afe64fdb9125d5cd38d658251649c2c0176b897cd6021a043 · sha256:39a9cfbf786f3ba3… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"OpenLDAP","vendor":"OpenLDAP Foundation","versions":[{"lessThan":"0.9.34","status":"affected","version":"0.9.14","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:69d5099894df021afe64fdb9125d5cd38d658251649c2c0176b897cd6021a043 · sha256:39a9cfbf786f3ba3… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":4.6,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"ACTIVE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NO…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:69d5099894df021afe64fdb9125d5cd38d658251649c2c0176b897cd6021a043 · sha256:39a9cfbf786f3ba3… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-191","description":"CWE-191 Integer Underflow (Wrap or Wraparound)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:69d5099894df021afe64fdb9125d5cd38d658251649c2c0176b897cd6021a043 · sha256:39a9cfbf786f3ba3… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-125","description":"CWE-125 Out-of-bounds Read","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:69d5099894df021afe64fdb9125d5cd38d658251649c2c0176b897cd6021a043 · sha256:39a9cfbf786f3ba3… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["issue-tracking","patch"],"url":"https://bugs.openldap.org/show_bug.cgi?id=10421"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:69d5099894df021afe64fdb9125d5cd38d658251649c2c0176b897cd6021a043 · sha256:39a9cfbf786f3ba3… · /containers/cna/references/4
{"tags":["technical-description","exploit"],"url":"https://seclists.org/fulldisclosure/2026/Jan/5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:69d5099894df021afe64fdb9125d5cd38d658251649c2c0176b897cd6021a043 · sha256:39a9cfbf786f3ba3… · /containers/cna/references/0
{"tags":["technical-description","exploit"],"url":"https://seclists.org/fulldisclosure/2026/Jan/8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:69d5099894df021afe64fdb9125d5cd38d658251649c2c0176b897cd6021a043 · sha256:39a9cfbf786f3ba3… · /containers/cna/references/1
{"tags":["product"],"url":"https://www.openldap.org/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:69d5099894df021afe64fdb9125d5cd38d658251649c2c0176b897cd6021a043 · sha256:39a9cfbf786f3ba3… · /containers/cna/references/2
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/openldap-lmdb-mdb-load-heap-buffer-underflow-in-readline"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:69d5099894df021afe64fdb9125d5cd38d658251649c2c0176b897cd6021a043 · sha256:39a9cfbf786f3ba3… · /containers/cna/references/3

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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