What is CVE-2026-20989?

CVE-2026-20989 is a low-severity vulnerability in Samsung Android, classified under Improper Verification of Cryptographic Signature. CVSS score: 2.4/10. Published 2026-03-16.

How severe is CVE-2026-20989?

Low severity. CVSS v3 base score is 2.4 out of 10.

Vulnerability in Samsung Android

CVE-2026-20989

Improper verification of cryptographic signature in Font Settings prior to SMR Mar-2026 Release 1 allows physical attackers to use custom font.

Published 2026-03-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 2.4 (Low). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.001 (1.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 1.2% 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 16.0
Samsung Mobile Devices — versions SMR Mar-2026 Release in Android 16

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

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

Frequently asked questions

What is CVE-2026-20989?: CVE-2026-20989 is a low-severity vulnerability in Samsung Android, classified under Improper Verification of Cryptographic Signature. CVSS score: 2.4/10. Published 2026-03-16.
How severe is CVE-2026-20989?: Low severity. CVSS v3 base score is 2.4 out of 10.