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CVE-2026-25834

MEDIUM CVSS 3.1: 6.5 EPSS 0.03%
Updated Apr 01, 2026
Mbed
Parameter Value
CVSS 6.5 (MEDIUM)
Type CWE-295 (Improper Certificate Validation), CWE-327 (Weak Crypto Algorithm)
Vendor Mbed
Public PoC No

Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
Low
Partial disruption

CVSS Vector v3.1

Weakness Type (CWE)

CWE-295 Improper Certificate Validation
CWE-327 Weak Crypto Algorithm

References 2

https://mbed-tls.readthedocs.io/en/latest/security-advisories/
cve@mitre.org
https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-…
cve@mitre.org
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