CVE-2026-34872

Published: Apr 01, 2026 Last Modified: Apr 01, 2026

ExploitDB:

Other exploit source:

Google Dorks:

CRITICAL 9,1

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Attack Vector: network

Attack Complexity: low

Privileges Required: none

User Interaction: none

Scope: unchanged

Confidentiality: high

Integrity: high

Availability: none

Description

AI Translation Available

An issue was discovered in Mbed TLS 3.5.x and 3.6.x through 3.6.5 and TF-PSA-Crypto 1.0. There is a lack of contributory behavior in FFDH due to improper input validation. Using finite-field Diffie-Hellman, the other party can force the shared secret into a small set of values (lack of contributory behavior). This is a problem for protocols that depend on contributory behavior (which is not the case for TLS). The attack can be carried by the peer, or depending on the protocol by an active network attacker (person in the middle).

347

Improper Verification of Cryptographic Signature

Draft

Abstraction: Base Structure: Simple

Common Consequences

Security Scopes Affected:

Access Control Integrity Confidentiality

Potential Impacts:

Gain Privileges Or Assume Identity Modify Application Data Execute Unauthorized Code Or Commands

Applicable Platforms

All platforms may be affected

View CWE Details

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

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