Vulnerability in Juniper Junos_os_evolved
CVE-2026-21902
An Incorrect Permission Assignment for Critical Resource vulnerability in the On-Box Anomaly detection framework of Juniper Networks Junos OS Evolved on PTX Series allows an unauthenticated, network-based attacker to execute code as root. …
EPSS: 0.177 (96.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sirt@juniper.net (vendor-advisory, Mitigation, Vendor Advisory)
- sirt@juniper.net (vendor-advisory, Mitigation, Vendor Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Product)
Frequently asked questions
- What is CVE-2026-21902?
- CVE-2026-21902 is a critical-severity vulnerability in Juniper Junos_os_evolved, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 9.8/10. Published 2026-02-25.
- How severe is CVE-2026-21902?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2026-21902 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.