CVE-2025-54479: big-ip next for Memory Corruption — Fix

Description

When a classification profile is configured on a virtual server without an HTTP or HTTP/2 profile, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Is your site exposed to CVE-2025-54479?

Run a free security scan — no signup, results in seconds.

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-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
f5	big-ip_next_cloud-native_network_functions	1.1.0 — 1.4.0
f5	big-ip_next_cloud-native_network_functions	All
f5	big-ip_next_cloud-native_network_functions	All
f5	big-ip_next_cloud-native_network_functions	All
f5	big-ip_next_cloud-native_network_functions	All
f5	big-ip_next_for_kubernetes	All
f5	big-ip_next_for_kubernetes	All
f5	big-ip_policy_enforcement_manager	15.1.0 — 15.1.10.8
f5	big-ip_policy_enforcement_manager	16.1.0 — 16.1.6.1
f5	big-ip_policy_enforcement_manager	17.1.0 — 17.1.3
f5	big-ip_policy_enforcement_manager	All

References

Advisories & Patches

https://my.f5.com/manage/s/article/K000151475

Frequently Asked Questions

What is CVE-2025-54479? +

When a classification profile is configured on a virtual server without an HTTP or HTTP/2 profile, undisclosed requests 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-2025-54479? +

CVE-2025-54479 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-2025-54479? +

CVE-2025-54479 affects products from f5, specifically: big-ip_next_cloud-native_network_functions, big-ip_next_for_kubernetes, big-ip_policy_enforcement_manager. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-54479? +

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.

Related Vulnerabilities

CVE-2026-8358

LibreOffice Calc can import tracked changes from a spreadsheet document. A heap buffer overflow existed when a document reused the …

CVE-2026-8356

LibreOffice can import presentations in the legacy binary PPT format. A stack buffer overflow existed when importing a colour-replacement record. …

CVE-2026-6040

A heap use-after-free existed when importing the blank-width characters of an ODF number format. A position value read from the …

CVE-2026-6039

LibreOffice can import drawings in the DXF format used by CAD software. A heap buffer overflow existed when importing a …

CVE-2026-3298

The method "sock_recvfrom_into()" of "asyncio.ProacterEventLoop" (Windows only) was missing a boundary check for the data buffer when using nbytes parameter. …

CVE-2026-40489

editorconfig-core-c is an EditorConfig core library for use by plugins supporting EditorConfig parsing. Versions up to and including 0.12.10 have …

CVE-2025-54479