{"action":"Upgrade tcc to 0.9.27+git20200814.62c30a4a-1 or later.","affected":[{"fixed":"0.9.27+git20200814.62c30a4a-1","introduced":"0"}],"component":"tcc","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["0.9.27+git20200814.62c30a4a-1"],"id":"tcs_01M5NDRCECMVSKQVM8YB7ESSE5","modified_at":"2026-09-21T07:02:16.684310096Z","published_at":"2019-05-31T11:29:02.623Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2019-12495","https://security-tracker.debian.org/tracker/CVE-2019-12495"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2019-12495#Debian:13/tcc","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2019-12495"}],"summary":"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 be"}