CVE-2025-61938: big-ip — Fix

Description

When a BIG-IP Advanced WAF or ASM security policy is configured with a URL greater than 1024 characters in length for the Data Guard Protection Enforcement setting, either manually or through the automatic Policy Builder, the bd process can terminate repeatedly. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

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CVSS v3.1 Score

7.5

HIGH

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

Weakness Type (CWE)

CWE-1284 CWE-1284

Affected Products

Vendor	Product	Versions
f5	big-ip_advanced_web_application_firewall	17.1.0 — 17.1.3
f5	big-ip_advanced_web_application_firewall	All
f5	big-ip_application_security_manager	17.1.0 — 17.1.3
f5	big-ip_application_security_manager	All

References

Advisories & Patches

https://my.f5.com/manage/s/article/K000156624

Frequently Asked Questions

What is CVE-2025-61938? +

When a BIG-IP Advanced WAF or ASM security policy is configured with a URL greater than 1024 characters in length for the Data Guard Protection Enforcement setting, either manually or through the automatic Policy Builder, the bd process can terminate repeatedly. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-61938? +

CVE-2025-61938 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-61938? +

CVE-2025-61938 affects products from f5, specifically: big-ip_advanced_web_application_firewall, big-ip_application_security_manager. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-61938? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-61938