Juniper Apstra up to 6.1.0 SSH key exchange without entity authentication

Summaryinfo

A vulnerability was found in Juniper Apstra up to 6.1.0. It has been rated as problematic. This affects an unknown part of the component SSH. The manipulation leads to key exchange without entity authentication. This vulnerability is traded as CVE-2025-13914. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Juniper Apstra up to 6.1.0. This issue affects an unknown function of the component SSH. The manipulation with an unknown input leads to a key exchange without entity authentication vulnerability. Using CWE to declare the problem leads to CWE-322. The product performs a key exchange with an actor without verifying the identity of that actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A Key Exchange without Entity Authentication vulnerability in the SSH implementation of Juniper Networks Apstra allows a unauthenticated, MITM attacker to impersonate managed devices. Due to insufficient SSH host key validation an attacker can perform a machine-in-the-middle attack on the SSH connections from Apstra to managed devices, enabling an attacker to impersonate a managed device and capture user credentials. This issue affects all versions of Apstra before 6.1.1.

It is possible to read the advisory at kb.juniper.net. The identification of this vulnerability is CVE-2025-13914 since 12/02/2025. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/10/2026).

Upgrading to version 6.1.1 eliminates this vulnerability.

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Productinfo

Vendor

• Juniper

Name

• Apstra

Version

• 6.0
• 6.1.0

License

• commercial

Website

• Vendor: https://www.juniper.net/

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