What is CVE-2026-20999?

CVE-2026-20999 is a high-severity vulnerability in Samsung Smart Switch, classified under Authentication Bypass by Capture-replay. CVSS score: 7.5/10. Published 2026-03-16.

How severe is CVE-2026-20999?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Samsung Smart Switch

CVE-2026-20999

Authentication bypass by replay in Smart Switch prior to version 3.7.69.15 allows remote attackers to trigger privileged functions.

EPSS: 0.003 (23.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Samsung Smart_switch
Samsung Mobile Smart Switch — versions 3.7.69.15

Weakness classification (CWE)

CWE-294 — Authentication Bypass by Capture-replay

References

mobile.security@samsung.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-20999?: CVE-2026-20999 is a high-severity vulnerability in Samsung Smart Switch, classified under Authentication Bypass by Capture-replay. CVSS score: 7.5/10. Published 2026-03-16.
How severe is CVE-2026-20999?: High severity. CVSS v3 base score is 7.5 out of 10.