CVE-2021-46825

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-07-07 · updated 2026-06-17
Weakness: CWE-444

Description

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: 6.7, 7.3
Broadcom Proxysg: 6.7, 7.3

References

https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/20638
https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/20638

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