CVE-2025-13914

Apstra: SSH host key validation vulnerability for managed devices

Published Apr 9, 2026 CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Solution

The following software releases have been updated to resolve this specific issue: Apstra 6.1.1, and all subsequent releases.


Vendor Workaround

There are no known workarounds for this issue.

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Juniper Networks
Juniper Networks apstra
Vendors & Products Juniper Networks
Juniper Networks apstra
Type Values Removed Values Added
Description 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.
Title Apstra: SSH host key validation vulnerability for managed devices
Weaknesses CWE-322
References
Metrics cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N'}

cvssV4_0

{'score': 7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/R:U/RE:M'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
juniper
Published
Updated
Apr 14, 2026, 2:35 PM
Reserved
Dec 2, 2025, 5:48 PM
Status
Analyzed
Published
Apr 9, 2026, 10:16 PM
Modified
Oct 7, 2026, 9:10 AM