CVE-2026-6664

7.5 highEPSS 0.7%

High (7.5) in pgbouncer pgbouncer. EPSS 0.7% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high

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

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 53% of CVEs (scores of 2026-10-31)
CWE: CWE-190
Published: 2026-05-09
Modified: 2026-07-24
Record from: the NVD, synced 2026-10-19

Affected

pgbouncer:pgbouncer

References

https://www.pgbouncer.org/changelog.html#pgbouncer-125x

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