CVE-2022-26071

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-05-05 · updated 2026-06-17
Weakness: CWE-330

Description

On F5 BIG-IP 16.1.x versions prior to 16.1.2.2, 15.1.x versions prior to 15.1.5.1, 14.1.x versions prior to 14.1.4.6, 13.1.x versions prior to 13.1.5, and all versions of 12.1.x and 11.6.x, a flaw in the way reply ICMP packets are limited in the Traffic Management Microkernel (TMM) allows an attacker to quickly scan open UDP ports. This flaw allows an off-path remote attacker to effectively bypass source port UDP randomization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

Affected products

F5 BIG-IP APM: 11.6.1, 11.6.2, 11.6.3, 11.6.4, 11.6.5, 12.1.0 (+25)
BIG-IP: 11.6.1, 11.6.2, 11.6.3, 11.6.4, 11.6.5, 12.1.0 (+25)
F5 Big-Ip Analytics: 11.6.1, 11.6.2, 11.6.3, 11.6.4, 11.6.5, 12.1.0 (+25)
F5 Networks, Inc. BIG-IP (AAM): 11.6.1, 11.6.2, 11.6.3, 11.6.4, 11.6.5, 12.1.0 (+25)
BIG-IP ASM: 11.6.1, 11.6.2, 11.6.3, 11.6.4, 11.6.5, 12.1.0 (+25)
F5 BIG-IP DNS: 11.6.1, 11.6.2, 11.6.3, 11.6.4, 11.6.5, 12.1.0 (+25)
F5 Big-Ip Fraud Protection Service: 11.6.1, 11.6.2, 11.6.3, 11.6.4, 11.6.5, 12.1.0 (+25)
F5 Big-Ip Global Traffic Manager: 11.6.1, 11.6.2, 11.6.3, 11.6.4, 11.6.5, 12.1.0 (+25)
F5 Big-Ip Link Controller: 11.6.1, 11.6.2, 11.6.3, 11.6.4, 11.6.5, 12.1.0 (+25)
F5 BIG-IP (LTM): 11.6.1, 11.6.2, 11.6.3, 11.6.4, 11.6.5, 12.1.0 (+25)
F5 Networks, Inc. BIG-IP (PEM): 11.6.1, 11.6.2, 11.6.3, 11.6.4, 11.6.5, 12.1.0 (+25)

References

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