Remote attackers can cause a denial of service in Sendmail 8.8.x and 8.9.2 by sending…
Priority LOW 27Published · 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
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Remote attackers can cause a denial of service in Sendmail 8.8.x and 8.9.2 by sending messages with a large number of headers.
Why it matters now
EPSS 0.02427 84th 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 · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:eric_allman:sendmail:8.8:*:*:*:*:*:*:* | 8.8 | Vulnerable | Eric Allman |
| cpe:2.3:a:eric_allman:sendmail:8.9.2:*:*:*:*:*:*:* | 8.9.2 | Vulnerable | Eric Allman |
- cpe:2.3:a:eric_allman:sendmail:8.8:*:*:*:*:*:*:* Versions 8.8 Vulnerable ·Eric Allman
- cpe:2.3:a:eric_allman:sendmail:8.9.2:*:*:*:*:*:*:* Versions 8.9.2 Vulnerable ·Eric Allman
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-1999-0393
- 2026-10-03 Alias added: GHSA-34q2-7xrv-pfcm
References
More Eric Allman Sendmail vulnerabilities
- TI-1999-00094 The debug command in Sendmail is enabled, allowing attackers to execute commands as root. CVSS 2.0HIGH 10.0
- TI-1999-00201 Sendmail 8.6.9 allows remote attackers to execute root commands, using ident. CVSS 2.0HIGH 10.0
- TI-1999-00046 MIME conversion buffer overflow in sendmail versions 8.8.3 and 8.8.4. CVSS 2.0HIGH 10.0
- TI-1999-00203 MIME buffer overflow in Sendmail 8.8.0 and 8.8.1 gives root access. CVSS 2.0HIGH 10.0
- TI-1999-00200 In Sendmail, attackers can gain root privileges via SMTP by specifying an improper "mail… CVSS 2.0HIGH 10.0
- TI-1999-00143 Sendmail WIZ command enabled, allowing root access. CVSS 2.0HIGH 7.2
Sources
- CVE-1999-0393 · CVE Program
- CVE-1999-0393 · NVD
- FIRST EPSS
- GHSA-34q2-7xrv-pfcm · 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