Strix
26.1K

CVE-2025-21087

HIGHCVSS 8.9/10EPSS 0.38%

Last modified

CVE-2025-21087 is a high-severity vulnerability rated 8.9/10 on the CVSS scale. When Client or Server SSL profiles are configured on a Virtual Server, or DNSSEC signing operations are in use, undisclosed traffic can cause an increase in memory and CPU resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

When Client or Server SSL profiles are configured on a Virtual Server, or DNSSEC signing operations are in use, undisclosed traffic can cause an increase in memory and CPU resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS 4.0
8.9/10

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.38%

29.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
F5Big-Ip Access Policy Manager>= 15.1.0, <= 15.1.10
F5Big-Ip Advanced Firewall Manager>= 15.1.0, <= 15.1.10
F5Big-Ip Advanced Web Application Firewall>= 15.1.0, <= 15.1.10
F5Big-Ip Analytics>= 15.1.0, <= 15.1.10
F5Big-Ip Application Acceleration Manager>= 15.1.0, <= 15.1.10
F5Big-Ip Application Security Manager>= 15.1.0, <= 15.1.10
F5Big-Ip Application Visibility And Reporting>= 15.1.0, <= 15.1.10
F5Big-Ip Automation Toolchain>= 15.1.0, <= 15.1.10
F5Big-Ip Carrier-Grade Nat>= 15.1.0, <= 15.1.10
F5Big-Ip Container Ingress Services>= 15.1.0, <= 15.1.10
F5Big-Ip Ddos Hybrid Defender>= 15.1.0, <= 15.1.10
F5Big-Ip Domain Name System>= 15.1.0, <= 15.1.10
F5Big-Ip Edge Gateway>= 15.1.0, <= 15.1.10
F5Big-Ip Fraud Protection Service>= 15.1.0, <= 15.1.10
F5Big-Ip Global Traffic Manager>= 15.1.0, <= 15.1.10
F5Big-Ip Link Controller>= 15.1.0, <= 15.1.10
F5Big-Ip Local Traffic Manager>= 15.1.0, <= 15.1.10
F5Big-Ip Policy Enforcement Manager>= 15.1.0, <= 15.1.10
F5Big-Ip Ssl Orchestrator>= 15.1.0, <= 15.1.10
F5Big-Ip Webaccelerator>= 15.1.0, <= 15.1.10
F5Big-Ip Websafe>= 15.1.0, <= 15.1.10
F5Big-Ip Access Policy Manager>= 16.1.0, < 16.1.6
F5Big-Ip Advanced Firewall Manager>= 16.1.0, < 16.1.6
F5Big-Ip Advanced Web Application Firewall>= 16.1.0, < 16.1.6
F5Big-Ip Analytics>= 16.1.0, < 16.1.6
F5Big-Ip Application Acceleration Manager>= 16.1.0, < 16.1.6
F5Big-Ip Application Security Manager>= 16.1.0, < 16.1.6
F5Big-Ip Application Visibility And Reporting>= 16.1.0, < 16.1.6
F5Big-Ip Automation Toolchain>= 16.1.0, < 16.1.6
F5Big-Ip Carrier-Grade Nat>= 16.1.0, < 16.1.6
F5Big-Ip Container Ingress Services>= 16.1.0, < 16.1.6
F5Big-Ip Ddos Hybrid Defender>= 16.1.0, < 16.1.6
F5Big-Ip Domain Name System>= 16.1.0, < 16.1.6
F5Big-Ip Edge Gateway>= 16.1.0, < 16.1.6
F5Big-Ip Fraud Protection Service>= 16.1.0, < 16.1.6
F5Big-Ip Global Traffic Manager>= 16.1.0, < 16.1.6
F5Big-Ip Link Controller>= 16.1.0, < 16.1.6
F5Big-Ip Local Traffic Manager>= 16.1.0, < 16.1.6
F5Big-Ip Policy Enforcement Manager>= 16.1.0, < 16.1.6
F5Big-Ip Ssl Orchestrator>= 16.1.0, < 16.1.6
F5Big-Ip Webaccelerator>= 16.1.0, < 16.1.6
F5Big-Ip Websafe>= 16.1.0, < 16.1.6
F5Big-Ip Access Policy Manager>= 17.1.0, < 17.1.2
F5Big-Ip Advanced Firewall Manager>= 17.1.0, < 17.1.2
F5Big-Ip Advanced Web Application Firewall>= 17.1.0, < 17.1.2
F5Big-Ip Analytics>= 17.1.0, < 17.1.2
F5Big-Ip Application Acceleration Manager>= 17.1.0, < 17.1.2
F5Big-Ip Application Security Manager>= 17.1.0, < 17.1.2
F5Big-Ip Application Visibility And Reporting>= 17.1.0, < 17.1.2
F5Big-Ip Automation Toolchain>= 17.1.0, < 17.1.2

Showing 50 of 63 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2025-21087?
When Client or Server SSL profiles are configured on a Virtual Server, or DNSSEC signing operations are in use, undisclosed traffic can cause an increase in memory and CPU resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated
How severe is CVE-2025-21087?
CVE-2025-21087 has a CVSS score of 8.9/10 (HIGH severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.
How do I fix CVE-2025-21087?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-21087?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST