Buffer overflow in SMTP HELO command in Sendmail allows a remote attacker to hide activities.
Priority MEDIUM 48Published · 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
- Complete · Complete · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Buffer overflow in SMTP HELO command in Sendmail allows a remote attacker to hide activities.
Why it matters now
EPSS 0.03135 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 · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apple:appleshare:-:*:*:ja:*:*:*:* | not specified by NVD | Vulnerable | Apple |
| cpe:2.3:a:pmail:mercury_mail_server:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Pmail |
| cpe:2.3:a:seattlelab:slmail:2.6:*:*:*:*:*:*:* | 2.6 | Vulnerable | Seattlelab |
- cpe:2.3:a:apple:appleshare:-:*:*:ja:*:*:*:* Versions not specified by NVD Vulnerable ·Apple
- cpe:2.3:a:pmail:mercury_mail_server:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Pmail
- cpe:2.3:a:seattlelab:slmail:2.6:*:*:*:*:*:*:* Versions 2.6 Vulnerable ·Seattlelab
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-1999-0098
- 2026-10-03 Alias added: GHSA-4q6j-57rg-f224
References
—
Sources
- CVE-1999-0098 · CVE Program
- CVE-1999-0098 · NVD
- FIRST EPSS
- GHSA-4q6j-57rg-f224 · GitHub Advisory Database · CC BY 4.0
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