VULNERABILITY INTELLIGENCE

CVE-2026-84784

CVSS score7.5 HIGH

EPSS probability0.63%

CISA KEVNot currently listed

Published2026-09-29

Last modified2026-10-08

Description

Issue summary: A malicious remote peer may flood the local QUIC stack with NEW_CONNECTION_ID frames by avoiding a limit check on how many connection IDs the remote QUIC stack can use. Impact summary: The local QUIC stack sends a RETIRE_CONN_ID frame for every NEW_CONNECTION_ID frame it receives. Th…