CVE-2025-6704

Published Jul 21, 2025

Last updated 5 days ago

Overview

AI description

Automated description summarized from trusted sources.

CVE-2025-6704 is an arbitrary file writing vulnerability found in the Secure PDF eXchange (SPX) feature of Sophos Firewall versions older than 21.0 MR2 (21.0.2). The vulnerability is triggered when a specific configuration of SPX is enabled and the firewall is running in High Availability (HA) mode. This vulnerability could allow an attacker to perform pre-authentication remote code execution. The vulnerability impacts approximately 0.05% of deployed devices.

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.
Source: security-alert@sophos.com
NVD status: Awaiting Analysis

Risk scores

CVSS 3.1

Type: Secondary
Base score: 9.8
Impact score: 5.9
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: CRITICAL

Weaknesses

security-alert@sophos.com: CWE-78

Hype score is a measure of social media activity compared against trending CVEs from the past 12 months. Max score 100.

Hype score: 3

References