Multiple stack-based buffer overflows in CMailCOM.dll in CMailServer 5.4.6 allow remote…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Complete · Complete · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:youngzsoft:cmailserver:5.4.6:*:*:*:*:*:*:* | 5.4.6 | Vulnerable | Youngzsoft |
- cpe:2.3:a:youngzsoft:cmailserver:5.4.6:*:*:*:*:*:*:* Versions 5.4.6 Vulnerable ·Youngzsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2008-6922
- 2026-10-03 Alias added: GHSA-w655-3x88-v9g5
More Youngzsoft Cmailserver vulnerabilities
- TI-2003-00261 Multiple buffer overflows in the SMTP Service for ESMTP CMailServer 4.0.2003.03.27 allow… CVSS 2.0HIGH 10.0
- TI-2002-00776 Buffer overflow in YoungZSoft CMailServer 3.30 allows remote attackers to execute… CVSS 2.0HIGH 7.5
- TI-2004-01025 SQL injection vulnerability in (1) fdelmail.asp, (2) addressc.asp, and possibly (3)… CVSS 2.0HIGH 10.0
- TI-2004-01026 Cross-site scripting (XSS) vulnerability in admin.asp in CMailServer 5.2 allows remote… CVSS 2.0MEDIUM 6.8
- TI-2007-01849 Cross-site scripting (XSS) vulnerability in signup.asp in CmailServer WebMail 5.3.4 and… CVSS 2.0MEDIUM 4.3
- TI-2007-01913 Cross-site scripting (XSS) vulnerability in mail/signup.asp in CmailServer WebMail 5.4.3… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2008-6922 · CVE Program
- CVE-2008-6922 · NVD
- FIRST EPSS
- GHSA-w655-3x88-v9g5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences