The TNEFFillMapi function in lib/ytnef.c in libytnef in ytnef through 1.9.2 does not…
Priority MEDIUM 43CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
The TNEFFillMapi function in lib/ytnef.c in libytnef in ytnef through 1.9.2 does not ensure a nonzero count value before a certain memory allocation, which allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted tnef file.
Why it matters now
EPSS 0.02393 84th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged 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:ytnef_project:ytnef:*:*:*:*:*:*:*:* | up to 1.9.2 | Vulnerable | Ytnef Project |
- cpe:2.3:a:ytnef_project:ytnef:*:*:*:*:*:*:*:* Versions up to 1.9.2 Vulnerable ·Ytnef Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2017-9146
- 2026-10-03 Alias added: GHSA-798c-jx77-ccgp
References
More Ytnef Project Ytnef vulnerabilities
- TI-2009-03694 ytnef has directory traversal CVSS 3.1CRITICAL 9.8
- TI-2017-06521 In libytnef in ytnef through 1.9.2, there is a heap-based buffer over-read due to… CVSS 3.0CRITICAL 9.8
- TI-2021-02371 Memory corruption in ytnef CVSS 3.1HIGH 7.8
- TI-2021-02370 Use after free in ytnef CVSS 3.1HIGH 7.8
- TI-2017-04138 An issue was discovered in ytnef before 1.9.1. CVSS 3.0HIGH 7.8
- TI-2017-04554 An issue was discovered in ytnef before 1.9.2. CVSS 3.0HIGH 7.5
Sources
- CVE-2017-9146 · CVE Program
- CVE-2017-9146 · NVD
- FIRST EPSS
- GHSA-798c-jx77-ccgp · GitHub Advisory Database · CC BY 4.0
- CVE-2017-9146 · 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