Wallbreak exploit

Exploit for CVE-2021-39670 and CVE-2021-39690. CVSS 5.5.

Published 1 Oct 2026Updated 1 Oct 2026135 sources
CVSS 5.5 PoC CANDIDATE

What happened

Permanent DoS in Android WallpaperManagerService via two CVEs causing unrecoverable boot loop.

Affected versions

Unknown product: See original advisory Fixed: See vendor advisory.

Why it matters

This source correlation may provide earlier visibility while structured CVE metadata is still being updated.

Detection & mitigation

  • Review the original advisory and validate affected versions.
  • Apply vendor-provided updates or mitigations when available.

Public PoC references