An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27.
Priority LOW 26CWE-787Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8 byte out of bounds write in the asm_parse_directive function in tccasm.c.
Why it matters now
EPSS 0.00746 55th 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-2018-20376
- 2026-10-03 Alias added: GHSA-x78g-cfg5-7fhx
References
More Tinycc vulnerabilities
- TI-2019-09330 An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. CVSS 3.0MEDIUM 5.5
- TI-2019-07146 An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. CVSS 3.0MEDIUM 5.5
- TI-2018-14428 An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. CVSS 3.0MEDIUM 5.5
- TI-2018-14427 An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. CVSS 3.0MEDIUM 5.5
Sources
- CVE-2018-20376 · CVE Program
- CVE-2018-20376 · NVD
- FIRST EPSS
- GHSA-x78g-cfg5-7fhx · GitHub Advisory Database · CC BY 4.0
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