Juniper ScreenOS Improper Authentication Vulnerability
Description
Juniper ScreenOS contains an improper authentication vulnerability that could allow unauthorized remote administrative access to the device.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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Details
- Vendor
- Juniper
- Product
- ScreenOS
- CVE
- CVE-2015-7755
- Affected versions
- ScreenOS 6.2: 6.2.0r15 – 6.2.0r18
ScreenOS 6.3: 6.3.0r12 – 6.3.0r20 (excluding builds 6.3.0r12b–6.3.0r19b) — fixed in 6.3.0r21 (oppure 6.3.0r12b–6.3.0r19b) (from the advisory and NVD; check the exact builds in the official advisory) - CVSS score
- 9.8
- Actively exploited
- Yes, listed in the CISA Known Exploited Vulnerabilities catalog
- CISA due date
- October 23, 2025 (deadline for US federal agencies: a good benchmark for you too)
- Source
- CISA KEV – original advisory
- Published
- October 2, 2025
The description and the recommended action are quoted from the public advisory; severity, exploitation status and affected versions are compiled automatically from public sources and may contain errors. The vendor's original advisory prevails: check it before taking action. This information is provided without warranty and does not replace a professional assessment.