What’s Vulnerable › Vulnerabilities

CVE-2015-8240

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-04-11 · updated 2026-06-17
• Weakness: CWE-19

Description

The Traffic Management Microkernel (TMM) in F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, GTM, Link Controller, and BIG-IP PEM before 11.4.1 HF10, 11.5.x before 11.5.4, and 11.6.x before 11.6.0 HF6 and BIG-IP PSM before 11.4.1 HF10 does not properly handle TCP options, which allows remote attackers to cause a denial of service via unspecified vectors, related to the tm.minpathmtu database variable.

Affected products

• F5 BIG-IP APM: 11.4.1, 11.5.3, 11.6.0
• BIG-IP: 11.4.1, 11.5.3, 11.6.0
• F5 Big-Ip Analytics: 11.4.1, 11.5.3, 11.6.0
• F5 Networks, Inc. BIG-IP (AAM): 11.4.1, 11.5.3, 11.6.0
• BIG-IP ASM: 11.4.1, 11.5.3, 11.6.0
• F5 Big-Ip Global Traffic Manager: 11.4.1, 11.5.3, 11.6.0
• F5 Big-Ip Link Controller: 11.4.1, 11.5.3, 11.6.0
• F5 BIG-IP (LTM): 11.4.1, 11.5.3, 11.6.0
• F5 Networks, Inc. BIG-IP (PEM): 11.4.1, 11.5.3, 11.6.0
• F5 Big-Ip Protocol Security Module: 11.4.1

References

• http://www.securitytracker.com/id/1035367
• https://support.f5.com/kb/en-us/solutions/public/k/06/sol06223540.html
• http://www.securitytracker.com/id/1035367
• https://support.f5.com/kb/en-us/solutions/public/k/06/sol06223540.html

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