Vulnerability Intelligence Report
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 firewall running in High Availability (HA) mode.
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:8.19%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-78 ↗CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Sophos | Sophos Firewall | 0 < 21.0 MR2 (21.0.2) (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
8.185%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Sophos Limited · Vendor · UK |
| Reserved | 2025-06-26T09:41:20 |
| Published | 2025-07-21T13:16:29 |
| Last Updated | 2025-07-21T15:07:07 |
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