What is CVE-2025-21601?

CVE-2025-21601 is a high-severity vulnerability in Juniper Junos, classified under CWE-573. CVSS score: 7.5/10. Published 2025-04-09.

How severe is CVE-2025-21601?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Juniper Junos

CVE-2025-21601

An Improper Following of Specification by Caller vulnerability in web management (J-Web, Captive Portal, 802.1X, Juniper Secure Connect (JSC) of Juniper Networks Junos OS on SRX Series, EX Series, MX240, MX480, MX960, QFX5120 Series, allow…

EPSS: 0.004 (29.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Juniper Junos — versions 21.4, 22.2, 22.4
Juniper Networks Junos Os — versions 0, 22.2, 22.4

Weakness classification (CWE)

CWE-573

References

sirt@juniper.net (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2025-21601?: CVE-2025-21601 is a high-severity vulnerability in Juniper Junos, classified under CWE-573. CVSS score: 7.5/10. Published 2025-04-09.
How severe is CVE-2025-21601?: High severity. CVSS v3 base score is 7.5 out of 10.