Vendor
Juniper: actively exploited vulnerabilities
8 vulnerabilities in Juniper products are listed in CISA’s catalog of actively exploited vulnerabilities. Latest addition on October 2, 2025: CVE-2015-7755 (ScreenOS).
- 8 exploited vulnerabilities in the catalog
- 0 added in the last 12 months
- 0 used by ransomware
- 2 products affected
Affected products
- Junos OS7
- ScreenOS1
All exploited vulnerabilities
CISA KEV catalog, newest first: each entry corresponds to observed exploitation.
2025 2 vulnerabilities
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CVE-2015-7755Juniper ScreenOS Improper Authentication Vulnerability
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CVE-2025-21590Juniper Junos OS Improper Isolation or Compartmentalization Vulnerability
2023 5 vulnerabilities
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CVE-2023-36851Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability
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CVE-2023-36847Juniper Junos OS EX Series Missing Authentication for Critical Function Vulnerability
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CVE-2023-36846Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability
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CVE-2023-36845Juniper Junos OS EX Series and SRX Series PHP External Variable Modification Vulnerability
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CVE-2023-36844Juniper Junos OS EX Series PHP External Variable Modification Vulnerability
2022 1 vulnerability
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CVE-2020-1631Juniper Junos OS Path Traversal Vulnerability
What to do
If your estate includes any of these products, make sure the vendor’s patches are applied, starting with the most recent vulnerabilities and those used by ransomware, then look for signs of compromise: an exploited vulnerability has often been used before it was fixed.
Additions from all vendors are tracked on the Actively exploited vulnerabilities page, updated several times a day. Sources: CISA KEV catalog (US public domain) and CERT-FR.