{"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_01M5NSM3C1MSS2CPZFGSAZGX97","modified_at":"2026-10-01T03:03:16.501727595Z","published_at":"2026-05-26T17:16:53.670Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-48691","https://security-tracker.debian.org/tracker/CVE-2026-48691"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-48691#Debian:13/fastnetmon","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-48691"}],"summary":"FastNetMon Community Edition through 1.2.9 contains an integer overflow in the BGP AS_PATH attribute encoder. In src/bgp_protocol.hpp, the IPv4UnicastAnnounce::get_attributes() function computes attri"}