What’s Vulnerable › Vulnerabilities

CVE-2023-43124: BIG-IP APM Clients TunnelCrack vulnerability

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-09-27 · updated 2026-06-17
• Weakness: CWE-319

Description

BIG-IP APM clients may send IP traffic outside of the VPN tunnel.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

Affected products

• F5 BIG-IP APM: from 14.1.5.2 through 14.1.5.6; from 15.1.8 through 15.1.10; from 16.1.3.3 through 16.1.4; 13.1.5.1, 17.1.0
• F5 Networks, Inc. BIG-IP APM client for Windows: from 7.2.3 through 7.2.4

References

• https://my.f5.com/manage/s/article/K000136907
• https://my.f5.com/manage/s/article/K000136907

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