One UI

Samsung One UI May 2021 Security Patch Details

Samsung is currently busy updating its countless Galaxy devices to the Android 11-based One UI 3.0/One UI 3.1 version. However, a number of eligible Galaxy smartphones and tablets had received this major update over the air, but a club of devices still waiting to taste the novelties of the latest One UI version.

Aside from the major s/w updates, Samsung also releases new security patches every month, which improves the system security for better device protection. At the moment, dozens of Galaxy devices installed the April 2021 security patch that brings fixes for 21 CVEs from Samsung and 30 critical CVEs from Google.

Moving on, the South Korean tech giant had already started sending the May 2021 security patch to the Galaxy S21 series in late last month. Besides, the Galaxy Z Flip 5G, Galaxy S20, Galaxy Note 20, and Galaxy A51 phones have also joined the party with the latest security patch.

As always, the company released the May 2021 security patch details, which consist of all the CVEs fixed with this latest security update. According to the official security bulletin, the May 2021 security patch brings fixes for 3 critical, 24 high, and 17 moderate CVEs while 4 already included in previous updates, and 1 not applicable to Samsung devices.

List of CVEs fixed with May 2021 security patch

  • Critical

CVE-2021-0473, CVE-2021-0474, CVE-2021-0475

  • High

CVE-2020-25705, CVE-2020-11246, CVE-2020-11234, CVE-2020-15436, CVE-2020-29368, CVE-2020-11251, CVE-2020-11236, CVE-2020-11247, CVE-2020-11237, CVE-2020-11191, CVE-2020-11255, CVE-2020-11243, CVE-2021-0445, CVE-2021-0428, CVE-2021-0472, CVE-2021-0485, CVE-2021-0487, CVE-2021-0482, CVE-2021-0484, CVE-2021-0476, CVE-2021-0477, CVE-2021-0481, CVE-2021-0466, CVE-2021-0480

  • Moderate

CVE-2021-0375, CVE-2021-0387, CVE-2021-0369, CVE-2021-0382, CVE-2021-0368, CVE-2021-0374, CVE-2021-0378, CVE-2021-0379, CVE-2021-0384, CVE-2021-0370, CVE-2021-0372, CVE-2021-0377, CVE-2021-0380, CVE-2021-0383, CVE-2021-0386, CVE-2021-0388, CVE-2021-0371

  • Already included in previous updates

CVE-2020-11242, CVE-2020-11245, CVE-2020-11210, CVE-2020-11252

  • Not applicable to Samsung devices


* Please see Android Security Bulletin for detailed information on Google patches HERE.

Aside from the Google patches, Samsung Mobile provides 23 Samsung Vulnerabilities and Exposures (SVE) items described here, in order to improve our customer’s confidence in the security of Samsung Mobile devices. Samsung security index (SSI), found in “Security software version”, SMR May-2021 Release 1 includes all patches from Samsung and Google. Some of the SVE items may not be included in this package, in case these items were already included in a previous maintenance release.


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