CVE-2026-6664

High

Published: 09 May 2026

Published

09 May 2026

Modified

09 May 2026

KEV Added

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Patch

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CVSS Score 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Score 0.0004 13.8th percentile

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-6664 is a high-severity Integer Overflow or Wraparound (CWE-190) vulnerability in Pgbouncer (inferred from references). Its CVSS base score is 7.5 (High).

Operationally, ranked at the 13.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

NVD Description

An integer overflow in network packet parsing code in PgBouncer before 1.25.2 bypasses a boundary check and can lead to a crash. An unauthenticated remote attacker can crash PgBouncer with a malformed SCRAM authentication packet.

Deeper analysisAI

Automated synthesis unavailable for this CVE.