CVE-2021-22992

high-risk
Published 2021-03-31

On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, 12.1.x before 12.1.5.3, and 11.6.x before 11.6.5.3, a malicious HTTP response to an Advanced WAF/BIG-IP ASM virtual server with Login Page configured in its policy may trigger a buffer overflow, resulting in a DoS attack. In certain situations, it may allow remote code execution (RCE), leading to complete system compromise. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Do I need to act?

~
7.8% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (14)

Affected Vendors

F5

References (2)

Vendor Advisory https://support.f5.com/csp/article/K52510511
Vendor Advisory https://support.f5.com/csp/article/K52510511
60
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 10/34 · Low
Exposure 18/34 · Moderate