CVE-2026-71980 — Belledonne Communications bcg729 1.1.2 Out-of-Bounds Read via decodeSIDframe()
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-adj…
Published: 2026-08-17 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7