CVE-2021-46825: Broadcom Advanced Secure Gateway

Critical severity, CVSS 9.1. EPSS: 1.6% chance of exploitation in the next 30 days.

Symantec Advanced Secure Gateway (ASG) and ProxySG are susceptible to an HTTP desync vulnerability. When a remote unauthenticated attacker and other web clients communicate through the proxy with the same web server, the attacker can send crafted HTTP requests and cause the proxy to forward web server responses to unintended clients. Severity/CVSSv3: High / 8.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Affected products

• Broadcom Advanced Secure Gateway: version 6.7 only; version 7.3 only
• Broadcom Proxysg: version 6.7 only; version 7.3 only

Published 2022-07-07. Last modified 2026-06-17.