CVE catalog

CVE-2019-9754

tcc: CVE-2019-9754

Severity: Medium
Published: Mar 13, 2019, 10:29:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.87% · 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 1 byte out of bounds write in the end_macro function in tccpp.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`	fixed
Debian	tcc	trixie	`0.9.27+git20200814.62c30a4a-2`	fixed
Debian	tcc	bookworm	`0.9.27+git20200814.62c30a4a-1`	fixed
Ubuntu	tcc	16.04	`0.9.27~git20140923.9d7fb33-3ubuntu1`	vulnerable
Ubuntu	tcc	16.04	`0.9.27~git20151227.933c223-1`	vulnerable
Ubuntu	tcc	18.04	`0.9.27~git20161217.cd9514ab-3ubuntu1`	vulnerable
Ubuntu	tcc	18.04	`0.9.27-2`	vulnerable
Ubuntu	tcc	18.04	`0.9.27-4`	vulnerable
Ubuntu	tcc	18.04	`0.9.27-5`	vulnerable
Ubuntu	tcc	20.04	`0.9.27-8`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	tcc	source	sid	`0.9.27+git20200814.62c30a4a-1`	low	Not reported	[925127]
Debian	tcc	source	trixie	`0.9.27+git20200814.62c30a4a-1`	low	Not reported	[925127]
Debian	tcc	source	bookworm	`0.9.27+git20200814.62c30a4a-1`	low	Not reported	[925127]

[Debian bug #925127]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

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

[Debian 13 (Trixie)]

[libtcc-dev]Fixed
Source package: [tcc]
Details (2)
- 0.9.27+git20200814.62c30a4a-2 · amd64 · trixie
  Fixed · Fixed: 0.9.27+git20200814.62c30a4a-1
  dsa · tcc · debian · 13
- 0.9.27+git20200814.62c30a4a-2 · arm64 · trixie
  Fixed · Fixed: 0.9.27+git20200814.62c30a4a-1
  dsa · tcc · debian · 13
[tcc]Fixed
Details (2)
- 0.9.27+git20200814.62c30a4a-2 · amd64 · trixie
  Fixed · Fixed: 0.9.27+git20200814.62c30a4a-1
  dsa · tcc · debian · 13
- 0.9.27+git20200814.62c30a4a-2 · arm64 · trixie
  Fixed · Fixed: 0.9.27+git20200814.62c30a4a-1
  dsa · tcc · debian · 13

Observed: Oct 23, 2026, 5:45:30 PM UTC

References

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