CVE-2025-6704CRITICAL 9.8EPSS p93.9%

CVE-2025-6704CVE-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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS7.85% probability of exploitation · percentile 93.9% · 2026-06-18T12:00:27Z
Published2025-07-21
Last modified2025-08-18

Underlying weaknesses· 1

CWE-78

References

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

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Special Elements used in an OS Command ('OS Command Injection')cwe-780%live

Related by meaning· 6

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.