Vulnerability · Published Jul 21, 2025 · Assigned by Sophos
CVE-2025-6704
Critical 9.8
In plain English
A critical-severity OS command injection in Sophos Firewall from Sophos. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 11.8% (higher than 96% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)11.8%top 3.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Sophos | Sophos Firewall | 0 – before 21.0 MR2 (21.0.2) |
Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H