A persistent cross-site scripting vulnerability in the graphical user interface of ScreenOS may allow a remote authenticated user to inject web script or HTML and steal sensitive data and credentials from a web administration session, possibly tricking a follow-on administrative user to perform administrative actions on the device. Affected releases are Juniper Networks ScreenOS 6.3.0 versions prior to 6.3.0r26.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.4, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required requiring only low-level privileges . The vulnerability impacts limited data confidentiality, limited integrity, for affected systems. Impacting 1 product from juniper organizations running these solutions should prioritize assessment and patching.
First disclosed in 2018, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.
2018-10-10T18:29:03.250
2026-06-17T01:29:30.790
Modified
CVSSv3.0: 5.4 (MEDIUM)
AV:N/AC:M/Au:S/C:N/I:P/A:N
6.8
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | juniper | netscreen_screenos | 6.3.0 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r1 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r2 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r3 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r4 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r5 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r6 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r7 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r8 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r9 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r10 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r11 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r12 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r13 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r14 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r15 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r16 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r17 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r18 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r19 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r21 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r22 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r23 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r23b1 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r24 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r24b1 | Yes |
| Operating System | juniper | netscreen_screenos | 6.3.0r25 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For juniper's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.