Improper following of specification by caller in Junos OS - CVE-2025-21601
Published: May 1, 2025
Vulnerability identifier: #VU108107
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-21601
CWE-ID: CWE-573
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper following of specification by caller error in web management (J-Web, Captive Portal, 802.1X, Juniper Secure Connect (JSC). A remote non-authenticated attacker can the device to cause the CPU to climb until the device becomes unresponsive.
Affected software
Junos OS
How to mitigate CVE-2025-21601
Install updates from vendor's website.
Junos OS - addressed in versions 21.4R3-S9, 22.2R3-S5, 22.4R3-S4, 23.2R2-S3, 23.4R2-S3, 24.2R1-S1, 24.2R2, 24.4R1