High severity · published Sep 14, 2021
CVE-2021-23044
On BIG-IP version 16.x before 16.1.0, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.2, 13.1.x before 13.1.4.1, and all versions of 12.1.x and 11.6.x, when the Intel QuickAssist…
7.5
CVSS
0.9%
EPSS
No
On KEV
Description
On BIG-IP version 16.x before 16.1.0, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.2, 13.1.x before 13.1.4.1, and all versions of 12.1.x and 11.6.x, when the Intel QuickAssist Technology (QAT) compression driver is used on affected BIG-IP hardware and BIG-IP Virtual Edition (VE) platforms, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BA
Big-ip Access Policy Manager · F5
11.6.0 through 11.6.5; 12.1.0 through 12.1.6; 13.1.0 before 13.1.4.1; 14.1.0 before 14.1.4.2; 15.1.0 before 15.1.3.1; 16.0.0 before 16.1.0 · source: NVD
BA
Big-ip Advanced Firewall Manager · F5
11.6.0 through 11.6.5; 12.1.0 through 12.1.6; 13.1.0 through 13.1.4.1; 14.1.0 before 14.1.4.2; 15.1.0 before 15.1.3.1; 16.0.0 before 16.1.0 · source: NVD
BA
Big-ip Analytics · F5
11.6.0 through 11.6.5; 12.1.0 through 12.1.6; 13.1.0 before 13.1.4.1; 14.1.0 before 14.1.4.2; 15.1.0 before 15.1.3.1; 16.0.0 before 16.1.0 · source: NVD
BA
Big-ip Application Acceleration Manager · F5
11.6.0 through 11.6.5; 12.1.0 through 12.1.6; 13.1.0 before 13.1.4.1; 14.1.0 before 14.1.4.2; 15.1.0 before 15.1.3.1; 16.0.0 before 16.1.0 · source: NVD
BA
Big-ip Application Security Manager · F5
11.6.0 through 11.6.5; 12.1.0 through 12.1.6; 13.1.0 before 13.1.4.1; 14.1.0 before 14.1.4.2; 15.1.0 before 15.1.3.1; 16.0.0 before 16.1.0 · source: NVD
BD
Big-ip Domain Name System · F5
11.6.0 through 11.6.5; 12.1.0 through 12.1.6; 13.1.0 before 13.1.4.1; 14.1.0 before 14.1.4.2; 15.1.0 before 15.1.3.1; 16.0.0 before 16.1.0 · source: NVD
BF
Big-ip Fraud Protection Service · F5
11.6.0 through 11.6.5; 12.1.0 through 12.1.6; 13.1.0 before 13.1.4.1; 14.1.0 before 14.1.4.2; 15.1.0 before 15.1.3.1; 16.0.0 before 16.1.0 · source: NVD
BG
Big-ip Global Traffic Manager · F5
11.6.0 through 11.6.5; 12.1.0 through 12.1.6; 13.1.0 before 13.1.4.1; 14.1.0 before 14.1.4.2; 15.1.0 before 15.1.3.1; 16.0.0 before 16.1.0 · source: NVD
BL
Big-ip Link Controller · F5
11.6.0 through 11.6.5; 12.1.0 through 12.1.6; 13.1.0 before 13.1.4.1; 14.1.0 before 14.1.4.2; 15.1.0 before 15.1.3.1; 16.0.0 before 16.1.0 · source: NVD
BL
Big-ip Local Traffic Manager · F5
11.6.0 through 11.6.5; 12.1.0 through 12.1.6; 13.1.0 before 13.1.4.1; 14.1.0 before 14.1.4.2; 15.1.0 before 15.1.3.1; 16.0.0 before 16.1.0 · source: NVD
BP
Big-ip Policy Enforcement Manager · F5
11.6.0 through 11.6.5; 12.1.0 through 12.1.6; 13.1.0 before 13.1.4.1; 14.1.0 before 14.1.4.2; 15.1.0 before 15.1.3.1; 16.0.0 before 16.1.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-23044
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-23044
Vendor Advisory
https://support.f5.com/csp/article/K35408374
More from Big-ip Access Policy Manager
9.8
CVE-2026-94127
BIG-IP APM OAuth vulnerability
9.8
CVE-2025-53521
BigIP APM Vulnerability
9.8
CVE-2023-46747
BIG-IP Configuration utility unauthenticated remote code execution vulnerability
9.8
CVE-2022-1388
F5 BIG-IP Missing Authentication Vulnerability
9.8
CVE-2021-22991
F5 BIG-IP Traffic Management Microkernel Buffer Overflow