CVE-2025-21590
Juniper Junos OS Improper Isolation or Compartmentalization Vulnerability
MITRE ATT&CK techniques
How this vulnerability maps to adversary behaviour, from the Center for Threat-Informed Defense's public CVE→ATT&CK mappings. Use it to check whether your detections already cover the technique.
Summary
Juniper Junos OS contains an improper isolation or compartmentalization vulnerability. This vulnerability could allows a local attacker with high privileges to inject arbitrary code.
Affected software
Vendor: Juniper · Product: Junos OS
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in Juniper
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2023-36846 | Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnera | 94.2% | Yes |
| CVE-2023-36845 | Juniper Junos OS EX Series and SRX Series PHP External Variable Modification Vul | 94.2% | Yes |
| CVE-2023-36844 | Juniper Junos OS EX Series PHP External Variable Modification Vulnerability | 91.4% | Yes |
| CVE-2023-36847 | Juniper Junos OS EX Series Missing Authentication for Critical Function Vulnerab | 84.7% | Yes |
| CVE-2015-7755 | Juniper ScreenOS Improper Authentication Vulnerability | 61.4% | Yes |
| CVE-2020-1631 | Juniper Junos OS Path Traversal Vulnerability | 4.7% | Yes |
| CVE-2023-36851 | Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnera | 1.1% | Yes |
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