Exploited CVEs / By vendor / Juniper
Juniper vulnerabilities actively exploited
8 Juniper CVEs on the CISA Known Exploited Vulnerabilities catalog, newest first. Refreshed daily.
Every CVE below is confirmed exploited in the wild, not just theoretically severe. The newest addition is CVE-2015-7755 (ScreenOS, added 2025-10-02). New CISA KEV entries appear here the day they are cataloged; the freshest across all vendors are on exploited this week.
Senserva AI Opinion and rich prompt for Juniper exploited CVEs
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Junos OS: 7 exploited CVEs
| CVE | Product | Added to KEV | Signals |
|---|---|---|---|
| CVE-2025-21590 | Junos OS | 2025-03-13 | CVSS 4.4, EPSS 2% |
| CVE-2023-36844 | Junos OS | 2023-11-13 | CVSS 5.3, EPSS 91% |
| CVE-2023-36845 | Junos OS | 2023-11-13 | CVSS 9.8, EPSS 94% |
| CVE-2023-36846 | Junos OS | 2023-11-13 | CVSS 5.3, EPSS 94% |
| CVE-2023-36847 | Junos OS | 2023-11-13 | CVSS 5.3, EPSS 85% |
| CVE-2023-36851 | Junos OS | 2023-11-13 | CVSS 5.3, EPSS 1% |
| CVE-2020-1631 | Junos OS | 2022-03-25 | CVSS 9.8, EPSS 5% |
Other Juniper products
| CVE | Product | Added to KEV | Signals |
|---|---|---|---|
| CVE-2015-7755 | ScreenOS | 2025-10-02 | CVSS 9.8, EPSS 61% |
Common questions about exploited Juniper CVEs
Which Juniper vulnerabilities are actively exploited?
As of August 2026, 8 Juniper CVEs are on the CISA Known Exploited Vulnerabilities catalog, meaning exploitation in the wild is confirmed. The most-listed products are Junos OS (7).
What is the newest exploited Juniper CVE?
CVE-2015-7755, affecting ScreenOS, added to the CISA KEV catalog on 2025-10-02. This page refreshes daily, so the newest entry is always first in the table.
How urgent are these Juniper CVEs?
KEV listing is the strongest fix-first signal there is: it means confirmed exploitation, not a prediction. Patch these ahead of higher-CVSS issues that nobody is exploiting. Check the vendor advisory (linked below) for fixed versions and workarounds.
Can I ask my own AI about exploited Juniper CVEs?
Yes. This page includes a free copy-paste AI prompt carrying the newest Juniper KEV entries, with CVSS, EPSS, and ransomware context, into Claude, ChatGPT, or Copilot. The data is refreshed twice a day (5 AM and 3 PM US Central).
Authoritative references
All vendors, searchable with due dates and CSV export: the exploited-CVE tracker. Every vendor with a page: exploited by vendor.