CVE-2016-9256

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% 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-362

Description

In F5 BIG-IP 12.1.0 through 12.1.2, permissions enforced by iControl can lag behind the actual permissions assigned to a user if the role_map is not reloaded between the time the permissions are changed and the time of the user's next request. This is a race condition that occurs rarely in normal usage; the typical period in which this is possible is limited to at most a few seconds after the permission change.

Affected products

F5 BIG-IP APM: 12.0.0, 12.1.0, 12.1.1, 12.1.2
BIG-IP: 12.0.0, 12.1.0, 12.1.1, 12.1.2
F5 Big-Ip Analytics: 12.0.0, 12.1.0, 12.1.1, 12.1.2
F5 Networks, Inc. BIG-IP (AAM): 12.0.0, 12.1.0, 12.1.1, 12.1.2
BIG-IP ASM: 12.0.0, 12.1.0, 12.1.1, 12.1.2
F5 BIG-IP DNS: 12.0.0, 12.1.0, 12.1.1, 12.1.2
F5 Big-Ip Link Controller: 12.0.0, 12.1.0, 12.1.1, 12.1.2
F5 BIG-IP (LTM): 12.0.0, 12.1.0, 12.1.1, 12.1.2
F5 Networks, Inc. BIG-IP (PEM): 12.0.0, 12.1.0, 12.1.1, 12.1.2
F5 Big-Ip Websafe: 12.0.0, 12.1.0, 12.1.1, 12.1.2

References

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