CVE-2025-21091: BIG-IP SNMP vulnerability

Q: What is the severity of CVE-2025-21091?

CVE-2025-21091 is considered to have a moderate impact due to increased memory resource utilization under certain conditions.

Q: How do I fix CVE-2025-21091?

To mitigate CVE-2025-21091, ensure that you are running a fixed version of F5 BIG-IP, specifically version 17.1.2 or later.

Q: What versions of F5 BIG-IP are affected by CVE-2025-21091?

CVE-2025-21091 affects F5 BIG-IP versions 15.1.0 to 15.1.10, 16.1.0 to 16.1.5, and 17.1.0 to 17.1.1.

Q: What conditions lead to the vulnerability described in CVE-2025-21091?

CVE-2025-21091 occurs when SNMP v1 or v2c are disabled on the BIG-IP system, allowing undisclosed requests to impact memory utilization.

Q: Is there a specific workaround for CVE-2025-21091?

There are no documented workarounds for CVE-2025-21091, so updating to a patched version is recommended.

Published Feb 5, 2025

Updated

When SNMP v1 or v2c are disabled on the BIG-IP system, undisclosed requests can cause an increase in memory resource utilization.

Other sources

When SNMP v1 or v2c are disabled on the BIG-IP, undisclosed requests can cause an increase in memory resource utilization.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

— MITRE

Affected Software

66 affected componentsFixes available

F5 BIG-IP>=17.1.0<=17.1.1

17.1.2

F5 BIG-IP>=16.1.0<=16.1.5

16.1.6

F5 BIG-IP>=15.1.0<=15.1.10

F5 BIG-IP Access Policy Manager>=15.1.0<=15.1.10

F5 BIG-IP Advanced Firewall Manager>=15.1.0<=15.1.10

F5 Big-ip Advanced Web Application Firewall>=15.1.0<=15.1.10

F5 BIG-IP Analytics>=15.1.0<=15.1.10

F5 Big-ip Application Acceleration Manager>=15.1.0<=15.1.10

F5 BIG-IP Application Security Manager>=15.1.0<=15.1.10

F5 Big-ip Application Visibility And Reporting>=15.1.0<=15.1.10

F5 Big-ip Automation Toolchain>=15.1.0<=15.1.10

F5 Big-ip Carrier-grade Nat>=15.1.0<=15.1.10

F5 BIG-IP Container Ingress Services>=15.1.0<=15.1.10

F5 Big-ip Ddos Hybrid Defender>=15.1.0<=15.1.10

F5 Big-ip Domain Name System>=15.1.0<=15.1.10

F5 BIG-IP Edge Gateway>=15.1.0<=15.1.10

F5 Big-ip Fraud Protection Service>=15.1.0<=15.1.10

F5 Big-ip Global Traffic Manager>=15.1.0<=15.1.10

F5 Big-ip Link Controller>=15.1.0<=15.1.10

F5 Big-ip Local Traffic Manager>=15.1.0<=15.1.10

F5 Big-ip Policy Enforcement Manager>=15.1.0<=15.1.10

F5 BIG-IP SSL Orchestrator>=15.1.0<=15.1.10

F5 Big-ip Webaccelerator>=15.1.0<=15.1.10

F5 Big-ip Websafe>=15.1.0<=15.1.10

F5 BIG-IP Access Policy Manager>=16.1.0<16.1.6

F5 BIG-IP Advanced Firewall Manager>=16.1.0<16.1.6

F5 Big-ip Advanced Web Application Firewall>=16.1.0<16.1.6

F5 BIG-IP Analytics>=16.1.0<16.1.6

F5 Big-ip Application Acceleration Manager>=16.1.0<16.1.6

F5 BIG-IP Application Security Manager>=16.1.0<16.1.6

F5 Big-ip Application Visibility And Reporting>=16.1.0<16.1.6

F5 Big-ip Automation Toolchain>=16.1.0<16.1.6

F5 Big-ip Carrier-grade Nat>=16.1.0<16.1.6

F5 BIG-IP Container Ingress Services>=16.1.0<16.1.6

F5 Big-ip Ddos Hybrid Defender>=16.1.0<16.1.6

F5 Big-ip Domain Name System>=16.1.0<16.1.6

F5 BIG-IP Edge Gateway>=16.1.0<16.1.6

F5 Big-ip Fraud Protection Service>=16.1.0<16.1.6

F5 Big-ip Global Traffic Manager>=16.1.0<16.1.6

F5 Big-ip Link Controller>=16.1.0<16.1.6

F5 Big-ip Local Traffic Manager>=16.1.0<16.1.6

F5 Big-ip Policy Enforcement Manager>=16.1.0<16.1.6

F5 BIG-IP SSL Orchestrator>=16.1.0<16.1.6

F5 Big-ip Webaccelerator>=16.1.0<16.1.6

F5 Big-ip Websafe>=16.1.0<16.1.6

F5 BIG-IP Access Policy Manager>=17.1.0<17.1.2

F5 BIG-IP Advanced Firewall Manager>=17.1.0<17.1.2

F5 Big-ip Advanced Web Application Firewall>=17.1.0<17.1.2

F5 BIG-IP Analytics>=17.1.0<17.1.2

F5 Big-ip Application Acceleration Manager>=17.1.0<17.1.2

F5 BIG-IP Application Security Manager>=17.1.0<17.1.2

F5 Big-ip Application Visibility And Reporting>=17.1.0<17.1.2

F5 Big-ip Automation Toolchain>=17.1.0<17.1.2

F5 Big-ip Carrier-grade Nat>=17.1.0<17.1.2

F5 BIG-IP Container Ingress Services>=17.1.0<17.1.2

F5 Big-ip Ddos Hybrid Defender>=17.1.0<17.1.2

F5 Big-ip Domain Name System>=17.1.0<17.1.2

F5 BIG-IP Edge Gateway>=17.1.0<17.1.2

F5 Big-ip Fraud Protection Service>=17.1.0<17.1.2

F5 Big-ip Global Traffic Manager>=17.1.0<17.1.2

F5 Big-ip Link Controller>=17.1.0<17.1.2

F5 Big-ip Local Traffic Manager>=17.1.0<17.1.2

F5 Big-ip Policy Enforcement Manager>=17.1.0<17.1.2

F5 BIG-IP SSL Orchestrator>=17.1.0<17.1.2

F5 Big-ip Webaccelerator>=17.1.0<17.1.2

F5 Big-ip Websafe>=17.1.0<17.1.2

Event History

Feb 5, 2025

Advisory Published

via F5·02:08 PM

CVE Published

via MITRE·05:31 PM

Data Sourced

via MITRE·05:31 PM

DescriptionSeverityWeakness

Data Sourced

via NVD·06:15 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

What is the severity of CVE-2025-21091?

CVE-2025-21091 is considered to have a moderate impact due to increased memory resource utilization under certain conditions.

How do I fix CVE-2025-21091?