CVE-2025-6704

Published: Jul 21, 2025Modified: Jun 17, 2026

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: security-alert@sophos.com (Secondary)

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.

Affected (1)

Products: Sophos: Firewall Firmware

1 product

Firewall Firmware

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Sophos Firewall Firmware	Before 21.0.2

Running on/with	Platform Versions
Sophos Firewall	All versions

Related CWEs

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

References (1)

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

Source: security-alert@sophos.com

Vendor Advisory

Timeline

No history available yet.