CVE-2026-20999: samsung smart_switch Authentication Bypass by Capture-replay
CVSS: 7.5v3.1HighAnalyzed
Published 16-03-2026Last modified 16-03-2026
Vulnerability summary
CVE-2026-20999 is a high (CVSS 7.5) Authentication Bypass by Capture-replay vulnerability in samsung smart_switch. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 24% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
0.33%
0%100%
Low · +0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 16-03-2026PublishedVulnerability first disclosed.
- 16-03-2026Last modifiedVulnerability information updated.
Description
Authentication bypass by replay in Smart Switch prior to version 3.7.69.15 allows remote attackers to trigger privileged functions.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.1Preferred score · CVE.org (CNA)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:NSourcesAll 2 agree
- NVDNIST7.1HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
High 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NSourcesSingle source
EPSS trend
Probability
0.33%
Chance of exploitation in the next 30 days
Percentile
24%
Versus all other CVEs
30-day change
+0.01 pp
From 0.31% on 19-09-2026
19-09-202619-10-2026
EPSS score0.33%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Samsung1 product
- smart_switch< 3.7.69.15
1 vendor · 1 product