#VU117306 NULL pointer dereference in envoy - CVE-2025-62409

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Main Vulnerability Database Vulnerabilities #VU117306

#VU117306 NULL pointer dereference in envoy - CVE-2025-62409

Published: October 16, 2025


Vulnerability identifier: #VU117306
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-62409
CWE-ID: CWE-476
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 perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference when handling large requests and responses. A remote attacker can send specially crafted HTTP requests to the server and trigger TCP connection pool to crash. 




Remediation

Install updates from vendor's website.

External links