Protection mechanism failure in Juniper Junos OS - CVE-2025-52951

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Main Vulnerability Database Vulnerabilities #VU113045

Protection mechanism failure in Juniper Junos OS - CVE-2025-52951

Published: July 18, 2025


Vulnerability identifier: #VU113045
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-52951
CWE-ID: CWE-693
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Juniper Networks, Inc.
Affected software:
Juniper Junos OS

Detailed vulnerability description

The vulnerability allows a remote non-authenticated attacker to corrupt data.

The vulnerability exists due to protection mechanism failure error in IPv6 firewall filter. A remote non-authenticated attacker can an interface to effectively bypass any firewall filtering configured on the interface.


How to mitigate CVE-2025-52951

Install updates from vendor's website.

Sources