What’s Vulnerable › Vulnerabilities

CVE-2016-9253

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-05-09 · updated 2026-06-17
• Weakness: CWE-20

Description

In F5 BIG-IP 12.1.0 through 12.1.2, specific websocket traffic patterns may cause a disruption of service for virtual servers configured to use the websocket profile.

Affected products

• F5 BIG-IP APM: 12.1.0, 12.1.1, 12.1.2
• BIG-IP: 12.1.0, 12.1.1, 12.1.2
• F5 Big-Ip Analytics: 12.1.0, 12.1.1, 12.1.2
• F5 Networks, Inc. BIG-IP (AAM): 12.1.0, 12.1.1, 12.1.2
• BIG-IP ASM: 12.1.0, 12.1.1, 12.1.2
• F5 BIG-IP DNS: 12.1.0, 12.1.1, 12.1.2
• F5 Big-Ip Link Controller: 12.1.0, 12.1.1, 12.1.2
• F5 BIG-IP (LTM): 12.1.0, 12.1.1, 12.1.2
• F5 Networks, Inc. BIG-IP (PEM): 12.1.0, 12.1.1, 12.1.2
• F5 Big-Ip Websafe: 12.1.0, 12.1.1, 12.1.2

References

• http://www.securitytracker.com/id/1038415
• https://support.f5.com/csp/article/K51351360
• http://www.securitytracker.com/id/1038415
• https://support.f5.com/csp/article/K51351360

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