Gztimewalker

**Name of the Vulnerable Software and Affected Versions** OpenCV wechat qrcode Module versions up to 4.7.0 **Description** A problematic vulnerability was found in the OpenCV wechat qrcode Module, affecting the function `DecodedBitStreamParser::decodeByteSegment` of the file `qrcode/decoder/decoded bit stream parser.cpp`. This vulnerability leads to a null pointer dereference and can be exploited remotely. The exploit has been publicly disclosed. **Recommendations** To fix this issue, apply a patch to the affected version. As a temporary workaround, consider disabling the `DecodedBitStreamParser::decodeByteSegment` function until a patch is available.