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Samsung and Google Android security updates

Updated 2 times since CLSTR started tracking revisions of this situation.

What changed

2026-10-12 16:02 UTC → 2026-10-26 13:09 UTC · added removed

In early October 2026, Samsung began rolling out a global security update for the Galaxy S23 and S24 series. This initial patch addressed 90 known system vulnerabilities to improve stability and data security, though it did not include the One UI 9.0 interface. For the Galaxy S23 series, Samsung indicated that the One UI 9.0 update, which serves as the final major operating system upgrade for those models, was expected by October 2026. Following this, Google and Samsung released broader October 2026 security patches. The Android Open Source Project reported 25 vulnerabilities, including seven classified as critical, affecting Android versions 14 through 17. Samsung issued a corresponding Security Maintenance Release for Galaxy devices to address 62 vulnerabilities, including nine critical flaws that could potentially allow attackers to execute code without user intervention. By mid-October, the scope of the October 2026 updates was further clarified. Google’s patch addressed multiple high-risk vulnerabilities exploitable remotely without user interaction across Android versions 14 through 17. Samsung’s specific rollout addressed 45 Android flaws identified by Google—including nine critical issues—in addition to 27 Samsung-specific software fixes and four high-severity fixes for Samsung Semiconductor components. The update cycle reflects ongoing ecosystem fragmentation. While newer devices By late October, Samsung began deploying its October 2026 security maintenance release to a wider range of devices. This deployment included flagship models like the Galaxy S23 through S26 series and recent S25 series, as well as various foldables receive monthly updates, many A-series models are updated quarterly. such as the Galaxy Z Fold 8 Ultra and Z Flip 8. Older models, including the Galaxy S21 S23 series and various A-series devices like the A13 and A52, have been excluded from Galaxy Z Fold 5/Z Flip 5, are receiving the update cycle. Furthermore, a significant portion of via the global market remains on Android 12 or earlier, which reached One UI 9.0 software update. In the end of official support in early 2026, leaving those users vulnerable United States, the Galaxy S21 FE has also begun receiving the patch, addressing 76 vulnerabilities to known flaws. prevent unauthorized memory access. The update cycle reflects ongoing ecosystem fragmentation.

Versions

  1. 2026-10-26 13:09 UTC Samsung and Google Android security updates
  2. 2026-10-12 16:02 UTC Samsung and Google Android security updates
  3. 2026-10-08 05:08 UTC Samsung and Google Android security updates

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