Is CVE-2004-0337 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2004-0337, but active exploitation has not been confirmed.

Can CVE-2004-0337 be exploited remotely?

Yes. CVE-2004-0337 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2004-0337?

CVE-2004-0337 has a CVSS score of 6.8 (MEDIUM).

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MEDIUMPOC

CVE-2004-0337

NVD-CWE-OtherPublished: November 23, 2004· Updated: Jun 16, 2026

6.8

CVSS v3.1

Official Description

Cross-site scripting (XSS) vulnerability in LAN SUITE Web Mail 602Pro allows remote attackers to execute arbitrary script or HTML as other users via a URL to index.html, followed by a / (slash) and the desired script. NOTE: the vendor states that this bug could not be reproduced, so this issue may be REJECTed in the future.

NVD Source

Technical Analysis

CVE-2004-0337 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2004-0337. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.