Is CVE-2012-4347 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2012-4347, but active exploitation has not been confirmed.

Can CVE-2012-4347 be exploited remotely?

Yes. CVE-2012-4347 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2012-4347?

CVE-2012-4347 has a CVSS score of 5.0 (MEDIUM).

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MEDIUMPOC

CVE-2012-4347

CWE-22Published: December 5, 2012· Updated: Jun 16, 2026

5.0

CVSS v3.1

Official Description

Multiple directory traversal vulnerabilities in the management console in Symantec Messaging Gateway (SMG) 9.5.x allow remote authenticated users to read arbitrary files via a .. (dot dot) in the (1) logFile parameter in a logs action to brightmail/export or (2) localBackupFileSelection parameter in an APPLIANCE restoreSource action to brightmail/admin/restore/download.do.

NVD Source

Technical Analysis

CVE-2012-4347 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-2012-4347. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.