Is CVE-2006-5652 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2006-5652, but active exploitation has not been confirmed.

Can CVE-2006-5652 be exploited remotely?

Yes. CVE-2006-5652 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2006-5652?

CVE-2006-5652 has a CVSS score of 4.3 (MEDIUM).

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MEDIUMPOC

CVE-2006-5652

NVD-CWE-OtherPublished: November 3, 2006· Updated: Jun 16, 2026

4.3

CVSS v3.1

Official Description

Cross-site scripting (XSS) vulnerability in Sun iPlanet Messaging Server Messenger Express allows remote attackers to inject arbitrary web script via the expression Cascading Style Sheets (CSS) function, as demonstrated by setting the width style for an IMG element. NOTE: this issue might be related to CVE-2006-5486, however due to the vagueness of the initial advisory and different researchers, it has been assigned a new CVE.

NVD Source

Technical Analysis

CVE-2006-5652 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-2006-5652. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.