Pseudo-Random Number Generator Misuse in Mbed TLS and TF-PSA-Crypto
CVE-2026-25835

7.7HIGH

Key Information:

Vendor

ARM
Status
Mbed TLS and TF-PSA-Crypto
Vendor
CVE Published:
1 April 2026

What is CVE-2026-25835?

The vulnerability manifests in Mbed TLS prior to version 3.6.6 and TF-PSA-Crypto prior to version 1.1.0, where incorrect management of seeds within a Pseudo-Random Number Generator (PRNG) can lead to predictability in the generated outputs. This predictability extends to sensitive operations that rely on secure random numbers, potentially compromising the integrity and security of cryptographic systems. The issue emphasizes the importance of proper seed handling in cryptographic implementations to prevent unauthorized access or manipulation.

References

https://mbed-tls.readthedocs.io/en/latest/security-adviso...
https://mbed-tls.readthedocs.io/en/latest/security-adviso...

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.