High severity · published Mar 16, 2026
CVE-2026-20999
Authentication bypass by replay in Smart Switch prior to version 3.7.69.15 allows remote attackers to trigger privileged functions
7.5
CVSS
0.3%
EPSS
No
On KEV
Description
Authentication bypass by replay in Smart Switch prior to version 3.7.69.15 allows remote attackers to trigger privileged functions.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SS
Smart Switch · Samsung
before 3.7.69.15 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20999
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20999
Vendor Advisory
https://security.samsungmobile.com/serviceWeb.smsb?year=2026&month=03
More from Smart Switch
9.8
CVE-2026-20998
Improper authentication in Smart Switch prior to version 3.7.69.15 allows remote attackers to bypass authentication
9.8
CVE-2026-20997
Improper verification of cryptographic signature in Smart Switch prior to version 3.7.69.15 allows remote attackers to potentially bypass authentication
6.9
CVE-2026-21138
Insufficient verification of data authenticity in Smart Switch prior to version 3.7.73 allows physical attackers to install arbitrary applications
6.8
CVE-2026-21136
Improper authorization in Smart Switch prior to version 3.7.73 allows physical attackers to invoke application restore process
6.5
CVE-2026-21083
Improper input validation in Smart Switch prior to version 3.7.72.6 allows adjacent attackers to access sensitive data