Is CVE-2025-6704 actively exploited?

No active exploitation of CVE-2025-6704 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-6704 be exploited remotely?

Yes. CVE-2025-6704 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-6704?

CVE-2025-6704 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2025-6704

CRITICAL

CVE-2025-6704

CWE-78Published: July 21, 2025· Updated: Jun 17, 2026

9.8

CVSS v3.1

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.

NVD Source

Technical Analysis

CVE-2025-6704 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

sophos2 product(s)

firewall firmwarefirewall

Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

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

News & Research Mentioning CVE-2025-6704

Lantronix EDS3000PS and EDS5000

CISA Alerts· Mar 10, 2026

View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to bypass authentication and execute code with root-level privileges. The following versions of Lantronix EDS3000PS and EDS5000 are affected: EDS3000PS 3.1.0.0R2 (CVE-2025-67039, CVE-2025-70082, CVE-2025-67041) EDS5000 2.1.0.0R3 (CVE-2025-67034, CVE-2025-67035, CVE-2025-67036, CVE-2025-67037, CVE-2025-67038) CVSS Vendor Equipment Vulnerabilities v3 9.8 Lantronix Lantronix EDS3000PS and EDS5000 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), Authentication Bypass Using an Alternate Path or Channel, Unverified Password Change Background Critical Infrastructure Sectors: Communications, Information Technology, Critical Ma [xlite_meta score:79 src:CISA Alerts xlite_fp:48c3d1a77d264f00fbfe76e6a288caee084b0de228fa6f15ff08109a2dbdca16]