CVE-2021-22975
HIGH
7.5
CVSS Score
Published: February 12, 2021 at 04:02 PM UTC
Updated: June 17, 2026 at 03:38 AM UTC
15 products affected across 1 vendorBig IP Access Policy ManagerBig IP Application Security ManagerBig IP Advanced Firewall Manager
Using BIG-IP by N/A?
Get instant alerts when new vulnerabilities affect BIG-IP - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.5
Exploit prediction
EPSS 1.0%
Description
On BIG-IP version 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, and 14.1.x before 14.1.3.1, under some circumstances, Traffic Management Microkernel (TMM) may restart on the BIG-IP system while passing large bursts of traffic. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
14.1.0 ≤ v < 14.1.3.115.1.0 ≤ v < 15.1.2.116.0.0 ≤ v < 16.0.1.1
Affected range stops below 14.1.3.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.2.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.1, so it looks safe — our inference, not a vendor statement
14.1.0 ≤ v < 14.1.3.115.1.0 ≤ v < 15.1.2.116.0.0 ≤ v < 16.0.1.1
Affected range stops below 14.1.3.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.2.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.1, so it looks safe — our inference, not a vendor statement
14.1.0 ≤ v < 14.1.3.115.1.0 ≤ v < 15.1.2.116.0.0 ≤ v < 16.0.1.1
Affected range stops below 14.1.3.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.2.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.1, so it looks safe — our inference, not a vendor statement
14.1.0 ≤ v < 14.1.3.115.1.0 ≤ v < 15.1.2.116.0.0 ≤ v < 16.0.1.1
Affected range stops below 14.1.3.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.2.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.1, so it looks safe — our inference, not a vendor statement
14.1.0 ≤ v < 14.1.3.115.1.0 ≤ v < 15.1.2.116.0.0 ≤ v < 16.0.1.1
Affected range stops below 14.1.3.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.2.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.1, so it looks safe — our inference, not a vendor statement
14.1.0 ≤ v < 14.1.3.115.1.0 ≤ v < 15.1.2.116.0.0 ≤ v < 16.0.1.1
Affected range stops below 14.1.3.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.2.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.1, so it looks safe — our inference, not a vendor statement
14.1.0 ≤ v < 14.1.3.115.1.0 ≤ v < 15.1.2.116.0.0 ≤ v < 16.0.1.1
Affected range stops below 14.1.3.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.2.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.1, so it looks safe — our inference, not a vendor statement
14.1.0 ≤ v < 14.1.3.115.1.0 ≤ v < 15.1.2.116.0.0 ≤ v < 16.0.1.1
Affected range stops below 14.1.3.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.2.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.1, so it looks safe — our inference, not a vendor statement
14.1.0 ≤ v < 14.1.3.115.1.0 ≤ v < 15.1.2.116.0.0 ≤ v < 16.0.1.1
Affected range stops below 14.1.3.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.2.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.1, so it looks safe — our inference, not a vendor statement
14.1.0 ≤ v < 14.1.3.115.1.0 ≤ v < 15.1.2.116.0.0 ≤ v < 16.0.1.1
Affected range stops below 14.1.3.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.2.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.1, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_MISCVendor Advisory
Source: [email protected]
https://support.f5.com/csp/article/K21971977CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card