Yabasic 2.86.1 has a heap-based buffer overflow in the yylex() function in flex.c via a crafted BASIC source file.
Priority MEDIUM 41CWE-787Published · 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 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
Yabasic 2.86.1 has a heap-based buffer overflow in the yylex() function in flex.c via a crafted BASIC source file.
Why it matters now
EPSS 0.01449 73rd 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
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-19720
- 2026-10-03 Alias added: GHSA-gmjr-xhqw-c9qx
References
More Yabasic vulnerabilities
- TI-2019-14268 Yabasic 2.86.2 has a heap-based buffer overflow in myformat in function.c via a crafted BASIC source file. CVSS 3.1HIGH 7.8
Sources
- CVE-2019-19720 · CVE Program
- CVE-2019-19720 · NVD
- FIRST EPSS
- GHSA-gmjr-xhqw-c9qx · GitHub Advisory Database · CC BY 4.0
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