CVE-2025-6704

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.09%
Vendor Advisory sophos.com
Affected: Sophos Sophos Firewall
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2025-6704?
CVE-2025-6704 has been scored as a critical severity vulnerability.
How to fix CVE-2025-6704?
To fix CVE-2025-6704, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-6704 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-6704 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-6704?
CVE-2025-6704 affects Sophos Sophos Firewall.
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