Known Exploited Vulnerability: CVE-2015-7755

Juniper ScreenOS Improper Authentication Vulnerability

Catalog version: 2026.06.29 Date added: 2025-10-02 Due date: 2025-10-23 CISA catalog

Vendor: Juniper

Product: ScreenOS

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Known ransomware campaign use: Unknown

Notes: https://supportportal.juniper.net/s/article/2015-12-Out-of-Cycle-Security-Bulletin-ScreenOS-Multiple-Security-issues-with-ScreenOS-CVE-2015-7755-CVE-2015-7756 https://nvd.nist.gov/vuln/detail/CVE-2015-7755

CWEs

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