CVE catalog

CVE-2018-20375

tcc: CVE-2018-20375

Severity: Low
Published: Dec 23, 2018, 6:29:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.75% · Oct 25, 2026

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 sym_pop function in tccgen.c.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	tcc	sid	`0.9.27+git20200814.62c30a4a-2`	vulnerable
Debian	tcc	trixie	`0.9.27+git20200814.62c30a4a-2`	vulnerable
Debian	tcc	bookworm	`0.9.27+git20200814.62c30a4a-1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	tcc	source	sid	`(unfixed)`	unimportant	Not reported	Not reported
Debian	tcc	source	trixie	`(unfixed)`	unimportant	Not reported	Not reported
Debian	tcc	source	bookworm	`(unfixed)`	unimportant	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libtcc-dev]Affected
Source package: [tcc]
Details (2)
- 0.9.27+git20200814.62c30a4a-1 · amd64 · bookworm
  Affected
  dsa · tcc · debian · bookworm; dsa · tcc · debian · 12
- 0.9.27+git20200814.62c30a4a-1 · arm64 · bookworm
  Affected
  dsa · tcc · debian · bookworm; dsa · tcc · debian · 12
[tcc]Affected
Details (2)
- 0.9.27+git20200814.62c30a4a-1 · amd64 · bookworm
  Affected
  dsa · tcc · debian · bookworm; dsa · tcc · debian · 12
- 0.9.27+git20200814.62c30a4a-1 · arm64 · bookworm
  Affected
  dsa · tcc · debian · bookworm; dsa · tcc · debian · 12

[Debian 13 (Trixie)]

[libtcc-dev]Affected
Source package: [tcc]
Details (2)
- 0.9.27+git20200814.62c30a4a-2 · amd64 · trixie
  Affected
  dsa · tcc · debian · 13
- 0.9.27+git20200814.62c30a4a-2 · arm64 · trixie
  Affected
  dsa · tcc · debian · 13
[tcc]Affected
Details (2)
- 0.9.27+git20200814.62c30a4a-2 · amd64 · trixie
  Affected
  dsa · tcc · debian · 13
- 0.9.27+git20200814.62c30a4a-2 · arm64 · trixie
  Affected
  dsa · tcc · debian · 13

Observed: Oct 23, 2026, 5:36:00 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]