CVE-2026-34871
Published:April 01, 2026
Updated:May 16, 2026
An issue was discovered in Mbed TLS before 3.6.6 and 4.x before 4.1.0 and TF-PSA-Crypto before 1.1.0. There is a Predictable Seed in a Pseudo-Random Number Generator (PRNG).
Affected Packages
mbedtls (CONAN):
Affected version(s) >=3.5.0 <3.6.6Fix Suggestion:
Update to version 3.6.6https://github.com/Mbed-TLS/mbedtls.git (GITHUB):
Affected version(s) =mbedtls-4.0.0 <mbedtls-4.1.0Fix Suggestion:
Update to version mbedtls-4.1.0https://github.com/Mbed-TLS/mbedtls.git (GITHUB):
Affected version(s) >=mbedtls-3.5.0 <mbedtls-3.6.6Fix Suggestion:
Update to version mbedtls-3.6.6https://github.com/Mbed-TLS/mbedtls.git (GITHUB):
Affected version(s) >=v3.5.0 <v3.6.6Fix Suggestion:
Update to version v3.6.6https://github.com/Mbed-TLS/mbedtls.git (GITHUB):
Affected version(s) =v4.0.0 <v4.1.0Fix Suggestion:
Update to version v4.1.0Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.4
Attack Vector
LOCAL
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.7
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
EPSS
Base Score:
0.02