Is CVE-2003-1481 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2003-1481, but active exploitation has not been confirmed.

Can CVE-2003-1481 be exploited remotely?

Yes. CVE-2003-1481 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2003-1481?

CVE-2003-1481 has a CVSS score of 5.8 (MEDIUM).

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MEDIUMPOC

CVE-2003-1481

CWE-200Published: December 31, 2003· Updated: Jun 16, 2026

5.8

CVSS v3.1

Official Description

CommuniGate Pro 3.1 through 4.0.6 sends the session ID in the referer field for an HTTP request for an image, which allows remote attackers to hijack mail sessions via an e-mail with an IMG tag that references a malicious URL that captures the referer.

NVD Source

Technical Analysis

CVE-2003-1481 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-2003-1481. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.