CVE WatchAug 17, 2026

CVE-2026-71980

Belledonne Communications bcg729 through 1.1.2 contains an out-of-bounds read vulnerability in the decodeSIDframe() function in src/cng.c th

CVSS

7.5

High

EPSS

0.3%

p27

KEV

—

Exploit Today

0-100

Published: Aug 17, 2026 · Last modified: Aug 17, 2026 · CWE-125

EPSS · 30d

Not enough EPSS history yet.

Technical description

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.

Official references

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