{"id":"CVE-2026-71980","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-71980","summary":"Belledonne Communications bcg729 through 1.1.2 contains an out-of-bounds read vulnerability in the decodeSIDframe() function in src/cng.c that allows unauthenticated network-adjacent…","details":"Belledonne Communications bcg729 through 1.1.2 contains an out-of-bounds read vulnerability in the decodeSIDframe() function in src/cng.c that allows unauthenticated network-adjacent attackers to trigger a heap read beyond buffer boundaries by sending a zero-length comfort-noise RTP payload. A zero-length payload causes an integer underflow in the uint8_t filter order calculation, which wraps to 255 and is clamped to 10, causing the function to unconditionally read 11 bytes from a zero-byte buffer, resulting in media process termination or silent consumption of adjacent heap memory as reflection coefficients.","published":"2026-08-17T17:50:41.205Z","modified":"2026-08-17T18:12:49.074Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"REPORT","url":"https://github.com/BelledonneCommunications/bcg729/issues/23"},{"type":"WEB","url":"https://www.linphone.org/"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/belledonne-communications-bcg729-out-of-bounds-read-via-decodesidframe"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-17T18:12:49.074Z"}}