What is CVE-2026-20977?

CVE-2026-20977 is a medium-severity vulnerability in Samsung Android, classified under CWE-284: IMPROPER ACCESS CONTROL. CVSS score: 5.5/10. Published 2026-02-04.

How severe is CVE-2026-20977?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Samsung Android

CVE-2026-20977

Improper access control in Emergency Sharing prior to SMR Feb-2026 Release 1 allows local attackers to interrupt its functioning.

Published 2026-02-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.001 (2.2th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Samsung Android — versions 14.0, 15.0, 16.0
Samsung Mobile Devices — versions SMR Feb-2026 Release in Android 14, 15, 16

References

security.samsungmobile.com/securityUpdate.smsb (Vendor Advisory)

Frequently asked questions

What is CVE-2026-20977?: CVE-2026-20977 is a medium-severity vulnerability in Samsung Android, classified under CWE-284: IMPROPER ACCESS CONTROL. CVSS score: 5.5/10. Published 2026-02-04.
How severe is CVE-2026-20977?: Medium severity. CVSS v3 base score is 5.5 out of 10.