CVE-2019-9754
CVE-2019-9754 is a medium-severity vulnerability in Tinycc with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (54th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Tinycc
- Published:
- Last modified:
Description
An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 1 byte out of bounds write in the end_macro function in tccpp.c.
Frequently asked questions
- What is CVE-2019-9754?
- An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 1 byte out of bounds write in the end_macro function in tccpp.c.
- How severe is CVE-2019-9754?
- CVE-2019-9754 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2019-9754 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-9754?
- CVE-2019-9754 affects Tinycc. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2019-9754?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2019-9754 published?
- CVE-2019-9754 was published on 2019-03-13 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:tinycc:tinycc:0.9.27:*:*:*:*:*:*:*
More vulnerabilities in Tinycc
- CVE-2019-12495 — Medium (CVSS 5.5): An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to a…
- CVE-2018-20376 — Medium (CVSS 5.5): An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8…
- CVE-2018-20375 — Medium (CVSS 5.5): An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8…
- CVE-2018-20374 — Medium (CVSS 5.5): An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8…
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