CVE-2025-58120: big-ip next for Null Dereference — Fix

Description

When HTTP/2 Ingress is configured, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. 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-476 CWE-476

Affected Products

Vendor	Product	Versions
f5	big-ip_next_cloud-native_network_functions	1.1.0 — 1.4.1
f5	big-ip_next_cloud-native_network_functions	All
f5	big-ip_next_for_kubernetes	All
f5	big-ip_next_service_proxy_for_kubernetes	1.7.0 — 1.7.14
f5	big-ip_next_service_proxy_for_kubernetes	All
f5	big-ip_next_service_proxy_for_kubernetes	All

References

Advisories & Patches

https://my.f5.com/manage/s/article/K000156623

Frequently Asked Questions

What is CVE-2025-58120? +

When HTTP/2 Ingress is configured, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. 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-2025-58120? +

CVE-2025-58120 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-2025-58120? +

CVE-2025-58120 affects products from f5, specifically: big-ip_next_cloud-native_network_functions, big-ip_next_for_kubernetes, big-ip_next_service_proxy_for_kubernetes. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-58120? +

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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