CVE-2021-23039
HIGH
7.5
CVSS Score
Published: September 14, 2021 at 05:05 PM UTC
Updated: June 17, 2026 at 03:38 AM UTC
12 products affected across 1 vendorBig IP Access Policy ManagerBig IP Application Security ManagerBig IP Advanced Firewall Manager
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Severity
HIGH7.5
Exploit prediction
EPSS 0.9%
Description
On version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3, 14.1.x before 14.1.2.8, and all versions of 13.1.x and 12.1.x, when IPSec is configured on a BIG-IP system, undisclosed requests from an authorized remote (IPSec) peer, which already has a negotiated Security Association, can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
12.1.0 ≤ v ≤ 12.1.613.1.0 ≤ v ≤ 13.1.414.1.0 ≤ v < 14.1.2.815.1.0 ≤ v < 15.1.316.0.0 ≤ v < 16.0.1.2
Affected range stops below 14.1.2.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.2, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v ≤ 12.1.613.1.0 ≤ v ≤ 13.1.414.1.0 ≤ v < 14.1.2.815.1.0 ≤ v < 15.1.316.0.0 ≤ v < 16.0.1.2
Affected range stops below 14.1.2.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.2, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v ≤ 12.1.613.1.0 ≤ v ≤ 13.1.414.1.0 ≤ v < 14.1.2.815.1.0 ≤ v < 15.1.316.0.0 ≤ v < 16.0.1.2
Affected range stops below 14.1.2.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.2, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v ≤ 12.1.613.1.0 ≤ v ≤ 13.1.414.1.0 ≤ v < 14.1.2.815.1.0 ≤ v < 15.1.316.0.0 ≤ v < 16.0.1.2
Affected range stops below 14.1.2.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.2, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v ≤ 12.1.613.1.0 ≤ v ≤ 13.1.414.1.0 ≤ v < 14.1.2.815.1.0 ≤ v < 15.1.316.0.0 ≤ v < 16.0.1.2
Affected range stops below 14.1.2.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.2, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v ≤ 12.1.613.1.0 ≤ v ≤ 13.1.414.1.0 ≤ v < 14.1.2.815.1.0 ≤ v < 15.1.316.0.0 ≤ v < 16.0.1.2
Affected range stops below 14.1.2.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.2, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v ≤ 12.1.613.1.0 ≤ v ≤ 13.1.414.1.0 ≤ v < 14.1.2.815.1.0 ≤ v < 15.1.316.0.0 ≤ v < 16.0.1.2
Affected range stops below 14.1.2.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.2, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v ≤ 12.1.613.1.0 ≤ v ≤ 13.1.414.1.0 ≤ v < 14.1.2.815.1.0 ≤ v < 15.1.316.0.0 ≤ v < 16.0.1.2
Affected range stops below 14.1.2.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.2, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v ≤ 12.1.613.1.0 ≤ v ≤ 13.1.414.1.0 ≤ v < 14.1.2.815.1.0 ≤ v < 15.1.316.0.0 ≤ v < 16.0.1.2
Affected range stops below 14.1.2.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.2, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v ≤ 12.1.613.1.0 ≤ v ≤ 13.1.414.1.0 ≤ v < 14.1.2.815.1.0 ≤ v < 15.1.316.0.0 ≤ v < 16.0.1.2
Affected range stops below 14.1.2.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1.2, 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_MISCMitigationVendor Advisory
Source: [email protected]
https://support.f5.com/csp/article/K66782293CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-20NVD-CWE-noinfo
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