Clearswift MAILsweeper 4.x allows remote attackers to bypass attachment detection via an…
Priority LOW 38Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Clearswift MAILsweeper 4.x allows remote attackers to bypass attachment detection via an attachment that does not specify a MIME-Version header field, which is processed by some mail clients.
Why it matters now
EPSS 0.03071 87th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:clearswift:mailsweeper:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | Clearswift |
| cpe:2.3:a:clearswift:mailsweeper:4.1:*:*:*:*:*:*:* | 4.1 | Vulnerable | Clearswift |
| cpe:2.3:a:clearswift:mailsweeper:4.2:*:*:*:*:*:*:* | 4.2 | Vulnerable | Clearswift |
| cpe:2.3:a:clearswift:mailsweeper:4.3:*:*:*:*:*:*:* | 4.3 | Vulnerable | Clearswift |
- cpe:2.3:a:clearswift:mailsweeper:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Clearswift
- cpe:2.3:a:clearswift:mailsweeper:4.1:*:*:*:*:*:*:* Versions 4.1 Vulnerable ·Clearswift
- cpe:2.3:a:clearswift:mailsweeper:4.2:*:*:*:*:*:*:* Versions 4.2 Vulnerable ·Clearswift
- cpe:2.3:a:clearswift:mailsweeper:4.3:*:*:*:*:*:*:* Versions 4.3 Vulnerable ·Clearswift
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2003-0121
- 2026-10-03 Alias added: GHSA-mhr9-3845-rrw9
References
More Clearswift Mailsweeper vulnerabilities
- TI-2004-00203 Multiple stack-based buffer overflows in the get_header function in header.c for LHA… CVSS 2.0HIGH 10.0
- TI-2003-00922 Multiple content security gateway and antivirus products allow remote attackers to bypass… CVSS 2.0HIGH 7.5
- TI-2003-00921 Multiple content security gateway and antivirus products allow remote attackers to bypass… CVSS 2.0HIGH 7.5
- TI-2004-00138 Multiple content security gateway and antivirus products allow remote attackers to bypass… CVSS 2.0HIGH 7.5
- TI-2004-00137 Multiple content security gateway and antivirus products allow remote attackers to bypass… CVSS 2.0HIGH 7.5
- TI-2004-00041 Multiple content security gateway and antivirus products allow remote attackers to bypass… CVSS 2.0HIGH 7.5
Sources
- CVE-2003-0121 · CVE Program
- CVE-2003-0121 · NVD
- FIRST EPSS
- GHSA-mhr9-3845-rrw9 · 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