CVE-2019-12495
UnknownEPSS 1.22%
Last modified
CVE-2019-12495 is a vulnerability of currently unknown severity. An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to a one-byte out-of-bounds write in the gsym_addr function in x86_64-gen.c. EPSS estimates a 1.22% chance of exploitation in the next 30 days.
Description
An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to a one-byte out-of-bounds write in the gsym_addr function in x86_64-gen.c. This occurs because tccasm.c mishandles section switches.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Tinycc | Tinycc | 0.9.27 |
References
- https://lists.nongnu.org/archive/html/tinycc-devel/2019-05/msg00044.htmlExploit, Third Party Advisory
- https://repo.or.cz/tinycc.git/commit/d04ce7772c2bc2781ab2502e0b1f1964488814b5Patch, Third Party Advisory
- https://lists.nongnu.org/archive/html/tinycc-devel/2019-05/msg00044.htmlExploit, Third Party Advisory
- https://repo.or.cz/tinycc.git/commit/d04ce7772c2bc2781ab2502e0b1f1964488814b5Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-12495?
An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to a one-byte out-of-bounds write in the gsym_addr function in x86_64-gen.c. This occurs because tccasm.c mishandles section switches.
How severe is CVE-2019-12495?
Severity scoring for CVE-2019-12495 is pending analysis. The EPSS model estimates a 1.22% probability of exploitation in the next 30 days.
How do I fix CVE-2019-12495?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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Are you affected by CVE-2019-12495?
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Scan your code nowSource: NVD / NIST