#VU119111 State Issues in envoy - CVE-2025-64763

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Main Vulnerability Database Vulnerabilities #VU119111

#VU119111 State Issues in envoy - CVE-2025-64763

Published: December 3, 2025


Vulnerability identifier: #VU119111
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-64763
CWE-ID: CWE-371
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
envoy
Software vendor:
Cloud Native Computing Foundation

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to a state issue related to forwarding of early CONNECT data in TCP proxy mode. A remote attacker can trigger de-synchronization of CONNECT tunnel state if a forwarding proxy upstream from Envoy responds with a non 2xx status and gain access to sensitive information.


Remediation

Install updates from vendor's website.

External links