libESMTP through 1.0.6 mishandles domain copying into a fixed-size buffer in…
Priority MEDIUM 47CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
libESMTP through 1.0.6 mishandles domain copying into a fixed-size buffer in ntlm_build_type_2 in ntlm/ntlmstruct.c, as demonstrated by a stack-based buffer over-read.
Why it matters now
EPSS 0.02974 87th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
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 · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:libesmtp_project:libesmtp:*:*:*:*:*:*:*:* | up to 1.0.6 | Vulnerable | Libesmtp Project |
- cpe:2.3:a:libesmtp_project:libesmtp:*:*:*:*:*:*:*:* Versions up to 1.0.6 Vulnerable ·Libesmtp Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 2 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2019-19977
- 2026-10-03 Alias added: GHSA-cxg8-9wrx-2mhp
References
Sources
- CVE-2019-19977 · CVE Program
- CVE-2019-19977 · NVD
- FIRST EPSS
- GHSA-cxg8-9wrx-2mhp · GitHub Advisory Database · CC BY 4.0
- CVE-2019-19977 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences