How severe is CVE-2008-6922?

CVE-2008-6922 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2008-6922 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-6922?

CVE-2008-6922 affects Youngzsoft Cmailserver. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-6922?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2008-6922 published?

CVE-2008-6922 was published on 2009-08-10 and last updated on 2026-06-16.

CVE-2008-6922

CVE-2008-6922 is a critical-severity vulnerability in Youngzsoft Cmailserver with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 9% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Youngzsoft Cmailserver
Published: 2009-08-10
Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2008-6922?: 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.
How severe is CVE-2008-6922?: CVE-2008-6922 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2008-6922 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-6922?: CVE-2008-6922 affects Youngzsoft Cmailserver. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-6922?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2008-6922 published?: CVE-2008-6922 was published on 2009-08-10 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:youngzsoft:cmailserver:5.4.6:*:*:*:*:*:*:*

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