Is CVE-2002-0637 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2002-0637, but active exploitation has not been confirmed.

Can CVE-2002-0637 be exploited remotely?

Yes. CVE-2002-0637 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2002-0637?

CVE-2002-0637 has a CVSS score of 7.5 (HIGH).

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HIGHPOC

CVE-2002-0637

NVD-CWE-OtherPublished: July 11, 2002· Updated: Jun 16, 2026

7.5

CVSS v3.1

Official Description

InterScan VirusWall 3.52 build 1462 allows remote attackers to bypass virus protection via e-mail messages with headers that violate RFC specifications by having (or missing) space characters in unexpected places (aka "space gap"), such as (1) Content-Type :", (2) "Content-Transfer-Encoding :", (3) no space before a boundary declaration, or (4) "boundary= ", which is processed by Outlook Express.

NVD Source

Technical Analysis

CVE-2002-0637 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-2002-0637. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.