## CVE-2017-0731: High-Severity Libstagefright Flaw Detected in Android 9.0.0 Build avandroid-9.0.0_r56
A high-severity vulnerability, CVE-2017-0731, has been identified in the Android media framework build avandroid-9.0.0_r56, according to automated security scanning of the repository. The flaw resides in libstagefright, Android's core multimedia processing component, specifically within codec handling routines for the m4v_h263 encoder. Five source files were flagged as vulnerable, with the primary exposure centered in /media/libstagefright/codecs/m4v_h263/enc/src/mp4lib_int.h—a header file responsible for internal MPEG-4 library structures used during media encoding operations.

The vulnerability targets the audio-visual framework maintained at android.googlesource.com/platform/frameworks/av, the official repository for Android's low-level media stack. Libstagefright has historically been a high-value attack surface, with prior vulnerabilities in this component enabling remote code execution through malformed media files. CVE-2017-0731 carries a "High" severity rating, suggesting significant potential for exploitation if an attacker can deliver a crafted input to the affected encoding pipeline. The affected build suggests this issue is present in Android 9.0 (Pie) codebase variants.

Organizations running deployments based on avandroid-9.0.0_r56 or derivative builds should prioritize patching cycles and audit media processing dependencies. The concentration of vulnerable code within encoder internals narrows the attack surface to applications that handle untrusted video content. Security teams integrating this Android framework component should verify whether upstream patches have been applied and monitor for vendor-specific advisories addressing CVE-2017-0731 remediation in production branches.
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- **Source**: GitHub Issues
- **Sector**: The Lab
- **Tags**: CVE-2017-0731, libstagefright, Android security, high-severity vulnerability, m4v_h263
- **Credibility**: unverified
- **Published**: 2026-05-14 13:48:33
- **ID**: 83035
- **URL**: https://whisperx.ai/en/intel/83035