{"action":"Upgrade fastnetmon to 1.2.9-0+deb13u1 or later.","affected":[{"fixed":"1.2.9-0+deb13u1","introduced":"0"}],"component":"fastnetmon","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1.2.9-0+deb13u1"],"id":"tcs_01M5NSM2QE8GKKYXWKKGDPCPBF","modified_at":"2026-10-01T03:03:16.461202637Z","published_at":"2026-05-26T19:16:28.663Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-48689","https://security-tracker.debian.org/tracker/CVE-2026-48689"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-48689","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-48689"}],"summary":"FastNetMon Community Edition through 1.2.9 contains an off-by-one heap-based buffer overflow in the dynamic_binary_buffer_t class (src/dynamic_binary_buffer.hpp). Five methods (append_dynamic_buffer,"}