CVE-2020-5921
HIGH
7.5
CVSS Score
Published: August 26, 2020 at 03:21 PM UTC
Updated: June 17, 2026 at 03:22 AM UTC
12 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%
Description
in BIG-IP versions 15.1.0-15.1.0.4, 15.0.0-15.0.1.3, 14.1.0-14.1.2.6, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.2, Syn flood causes large number of MCPD context messages destined to secondary blades consuming memory leading to MCPD failure. This issue affects only VIPRION hosts with two or more blades installed. Single-blade VIPRION hosts are not affected.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
12.1.0 ≤ v < 12.1.5.214.1.0 ≤ v < 14.1.2.715.0.0 ≤ v < 15.0.1.415.1.0 ≤ v < 15.1.0.5
Affected range stops below 12.1.5.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 14.1.2.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.1.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.0.5, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v < 12.1.5.214.1.0 ≤ v < 14.1.2.715.0.0 ≤ v < 15.0.1.415.1.0 ≤ v < 15.1.0.5
Affected range stops below 12.1.5.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 14.1.2.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.1.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.0.5, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v < 12.1.5.214.1.0 ≤ v < 14.1.2.715.0.0 ≤ v < 15.0.1.415.1.0 ≤ v < 15.1.0.5
Affected range stops below 12.1.5.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 14.1.2.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.1.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.0.5, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v < 12.1.5.214.1.0 ≤ v < 14.1.2.715.0.0 ≤ v < 15.0.1.415.1.0 ≤ v < 15.1.0.5
Affected range stops below 12.1.5.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 14.1.2.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.1.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.0.5, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v < 12.1.5.214.1.0 ≤ v < 14.1.2.715.0.0 ≤ v < 15.0.1.415.1.0 ≤ v < 15.1.0.5
Affected range stops below 12.1.5.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 14.1.2.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.1.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.0.5, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v < 12.1.5.214.1.0 ≤ v < 14.1.2.715.0.0 ≤ v < 15.0.1.415.1.0 ≤ v < 15.1.0.5
Affected range stops below 12.1.5.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 14.1.2.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.1.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.0.5, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v < 12.1.5.214.1.0 ≤ v < 14.1.2.715.0.0 ≤ v < 15.0.1.415.1.0 ≤ v < 15.1.0.5
Affected range stops below 12.1.5.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 14.1.2.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.1.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.0.5, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v < 12.1.5.214.1.0 ≤ v < 14.1.2.715.0.0 ≤ v < 15.0.1.415.1.0 ≤ v < 15.1.0.5
Affected range stops below 12.1.5.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 14.1.2.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.1.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.0.5, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v < 12.1.5.214.1.0 ≤ v < 14.1.2.715.0.0 ≤ v < 15.0.1.415.1.0 ≤ v < 15.1.0.5
Affected range stops below 12.1.5.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 14.1.2.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.1.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.0.5, so it looks safe — our inference, not a vendor statement
12.1.0 ≤ v < 12.1.5.214.1.0 ≤ v < 14.1.2.715.0.0 ≤ v < 15.0.1.415.1.0 ≤ v < 15.1.0.5
Affected range stops below 12.1.5.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 14.1.2.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.1.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.0.5, 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/K00103216CVSS
- 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