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CVE-2026-14662: PostgreSQL tsvector and tsquery undersize allocations, via integer wraparound

highCVSS 8.8CVE-2026-14662

CSIRTS triage

vendor: PostgreSQLproduct: PostgreSQLMemory corruption
What
Integer wraparound in tsvector and tsquery data type allocations causes undersized memory allocation and heap corruption.
Who is affected
PostgreSQL instances using tsvector or tsquery data types are affected.
Urgency
High severity with CVSS 8.8 indicating potential code execution; timely patching is critical.
Action
Update PostgreSQL to a patched version immediately.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 8.8
Published
2026-08-11
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-14662

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-14662coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

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