Is CVE-2008-6922 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2008-6922, but active exploitation has not been confirmed.

Can CVE-2008-6922 be exploited remotely?

Yes. CVE-2008-6922 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2008-6922?

CVE-2008-6922 has a CVSS score of 9.3 (CRITICAL).

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CRITICALPOC

CVE-2008-6922

CWE-119Published: August 10, 2009· Updated: Jun 16, 2026

9.3

CVSS v3.1

Official Description

Multiple stack-based buffer overflows in CMailCOM.dll in CMailServer 5.4.6 allow remote attackers to execute arbitrary code via a long argument to the (1) CreateUserPath, (2) Logout, (3) DeleteMailByUID, (4) MoveToInbox, (5) MoveToFolder, (6) DeleteMailEx, (7) GetMailDataEx, (8) SetReplySign, (9) SetForwardSign, and (10) SetReadSign methods, which are not properly handled by (a) the POP3 Class ActiveX control (CMailCom.POP3); or a long argument to the (11) AddAttach, (12) SetSubject, (13) SetBcc, (14) SetBody, (15) SetCc, (16) SetFrom, (17) SetTo, and (18) SetFromUID methods, which are not properly handled by the Class ActiveX control (CMailCOM.SMTP), as demonstrated via the indexOfMail parameter to mwmail.asp.

NVD Source

Technical Analysis

CVE-2008-6922 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-2008-6922. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.