What is CVE-2026-6477?

CVE-2026-6477 is a security advisory published by Microsoft Security Response Center (MSRC). PostgreSQL libpq lo_* functions let server superuser overwrite client stack memory

Which CVE IDs does CVE-2026-6477 cover?

CVE-2026-6477 covers the following CVE IDs: CVE-2026-6477. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-6477?

CVE-2026-6477 has a CVSS v3 base score of 8.8, published by Microsoft Security Response Center (MSRC).

CVE-2026-6477CVSS 8.8

PostgreSQL libpq lo_* functions let server superuser overwrite client stack memory

Vendor

Microsoft Security Response Center (MSRC)

Published

May 22, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-6477 →