What’s Vulnerable › Vulnerabilities
CVE-2025-2233: Samsung SmartThings Improper Verification of Cryptographic Signature Authentication Bypass Vulnerability
- Severity: high (CVSS 8.8 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.8% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-03-11 · updated 2026-06-17
- Weakness: CWE-347
Description
Samsung SmartThings Improper Verification of Cryptographic Signature Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Samsung SmartThings. Authentication is not required to exploit this vulnerability. The specific flaw exists within the Hub Local API service, which listens on TCP port 8766 by default. The issue results from the lack of proper verification of a cryptographic signature. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-25615.
Affected products
- Samsung Mobile SmartThings: before 0.55.5 — fixed in 0.55.5
How to fix
Upgrade to a fixed version: Samsung Mobile SmartThings 0.55.5. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2025-2233 or the next vulnerability affects your stack