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 remote code execution, if a specific configuration of SPX is enabled in combination with the…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (9.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 9.33% probability · 95th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-78
- Affected
- sophos/firewall firmware
- Source
- security-alert@sophos.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.