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Jwt Attack CVE-2026-20997

| EUVD-2026-12311 MEDIUM
Improper Verification of Cryptographic Signature (CWE-347)
2026-03-16 SamsungMobile
Authentication Bypass Jwt Attack
5.3
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
P
Scope
X

Lifecycle Timeline

3
EUVD ID Assigned
Mar 16, 2026 - 05:00 euvd
EUVD-2026-12311
Analysis Generated
Mar 16, 2026 - 05:00 vuln.today
CVE Published
Mar 16, 2026 - 04:32 nvd
MEDIUM 5.3

DescriptionNVD

Improper verification of cryptographic signature in Smart Switch prior to version 3.7.69.15 allows remote attackers to potentially bypass authentication.

AnalysisAI

Smart Switch prior to version 3.7.69.15 contains an improper cryptographic signature verification vulnerability that allows remote attackers to bypass authentication mechanisms. The vulnerability has a CVSS score of 5.3 with network-based attack vector and low complexity, requiring only user interaction. …

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RemediationAI

Within 30 days: Identify affected systems running Smart Switch and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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CVE-2026-20997 vulnerability details – vuln.today
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