CVE-2025-6704: 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…

PriorityP271critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EPSS

8.19%

94.2th percentile

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

2 ranges

Vendor	Product	Version range	Fixed in
sophos	firewall_firmware	< 21.0.2	21.0.2
sophos	sophos_firewall	< 21.0 MR2 (21.0.2)	21.0 MR2 (21.0.2)

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