Google’s November security bulletin patched over 200 vulnerabilities, including a critical zero-click remote code execution flaw, urging Android users to upgrade as soon as possible.

Google recently released the November 2026 Android Security Bulletin, patching over 200 total vulnerabilities. The most severe flaw is CVE-2026-58868, a critical-severity heap buffer overflow leading to out-of-bounds write in the Framework component, specifically in the onOutputReceived function of FrameDecoder.cpp. This zero-click vulnerability allows attackers to execute arbitrary code remotely without user interaction or additional permissions, potentially granting full control over affected devices. Google has not confirmed in-the-wild exploitation of the flaw, nor has a public proof-of-concept (PoC) been disclosed. Affected Android versions include 14, 15, 16, 16 QPR2, and 17. Patches are rolled out in two tiers: - Security Patch Level ≥ 2026-11-01: includes fixes for Framework and System components such as CVE-2026-58868; - Security Patch Level ≥ 2026-11-05: covers all vulnerabilities in this update, including kernel and chipset issues from vendors like MediaTek and Qualcomm. SlowMist CISO 23pds noted that if this vulnerability is exploited in the wild, the impact will be extremely severe. Android devices account for roughly 70% of global smartphones, so large-scale exploitation could lead to widespread device compromise. Users are advised to immediately check and upgrade their systems: navigate to Settings → About Phone → Android Version to confirm the Security Patch Level is at 2026-11-05 or higher. Rollout times may vary across device manufacturers, so users are recommended to prioritize upgrading to the full patch level.