Off-by-one buffer overflow in spamc of SpamAssassin 2.40 through 2.43, when using BSMTP…
Priority MEDIUM 41CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- High
- 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
Off-by-one buffer overflow in spamc of SpamAssassin 2.40 through 2.43, when using BSMTP mode ("-B"), allows remote attackers to execute arbitrary code via email containing headers with leading "." characters.
Why it matters now
EPSS 0.04564 91st 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:spamassassin:spamassassin:2.40:*:*:*:*:*:*:* | 2.40 | Vulnerable | Spamassassin |
| cpe:2.3:a:spamassassin:spamassassin:2.41:*:*:*:*:*:*:* | 2.41 | Vulnerable | Spamassassin |
| cpe:2.3:a:spamassassin:spamassassin:2.42:*:*:*:*:*:*:* | 2.42 | Vulnerable | Spamassassin |
| cpe:2.3:a:spamassassin:spamassassin:2.43:*:*:*:*:*:*:* | 2.43 | Vulnerable | Spamassassin |
- cpe:2.3:a:spamassassin:spamassassin:2.40:*:*:*:*:*:*:* Versions 2.40 Vulnerable ·Spamassassin
- cpe:2.3:a:spamassassin:spamassassin:2.41:*:*:*:*:*:*:* Versions 2.41 Vulnerable ·Spamassassin
- cpe:2.3:a:spamassassin:spamassassin:2.42:*:*:*:*:*:*:* Versions 2.42 Vulnerable ·Spamassassin
- cpe:2.3:a:spamassassin:spamassassin:2.43:*:*:*:*:*:*:* Versions 2.43 Vulnerable ·Spamassassin
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2003-1557
- 2026-10-03 Alias added: GHSA-q495-h2r3-cf69
References
More Spamassassin vulnerabilities
- TI-2004-00734 SpamAssassin 2.5x, and 2.6x before 2.64, allows remote attackers to cause a denial of… CVSS 2.0MEDIUM 5.0
- TI-2007-02780 SpamAssassin 3.1.x, 3.2.0, and 3.2.1 before 20070611, when running as root in unusual… CVSS 2.0LOW 1.9
Sources
- CVE-2003-1557 · CVE Program
- CVE-2003-1557 · NVD
- FIRST EPSS
- GHSA-q495-h2r3-cf69 · 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