A heap-based buffer over-read occurs in AP4_BitStream::WriteBytes in Codecs/Ap4BitStream.cpp in Bento4 v1.5.1-627. Remote attackers could leverage this vulnerability to cause an exception via crafted mp4 input, which leads to a denial of service.
Severity
CVSS 3.0
6.5 medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS
1.5% chance of exploitation in the next 30 days; higher than 73% of CVEs (scores of 2026-10-31)