CVE-2025-6704

critical

Description

An arbitrary file writing vulnerability in the Secure PDF eXchange (SPX) feature of Sophos Firewall versions older than 21.0 MR2 (21.0.2) can lead to pre-auth remote code execution, if a specific configuration of SPX is enabled in combination with the firewall running in High Availability (HA) mode.

References

References
More

https://thehackernews.com/2025/07/sophos-and-sonicwall-patch-critical-rce.html

https://www.securityweek.com/critical-vulnerabilities-patched-in-sophos-firewall/

https://securityaffairs.com/180283/security/sophos-addressed-five-sophos-firewall-vulnerabilities.html

https://www.sophos.com/en-us/security-advisories/sophos-sa-20250721-sfos-rce

Details

Source: Mitre, NVD

Published: 2025-07-21

Updated: 2025-07-22

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00087