CVE-2025-55036: big-ip ssl Memory Corruption — Fix

Description

When BIG-IP SSL Orchestrator explicit forward proxy is configured on a virtual server and the proxy connect feature is enabled, undisclosed traffic may cause memory corruption. 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-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
f5	big-ip_ssl_orchestrator	15.1.0 — 15.1.10.8
f5	big-ip_ssl_orchestrator	16.1.0 — 16.1.6
f5	big-ip_ssl_orchestrator	17.1.0 — 17.1.3

References

Advisories & Patches

https://my.f5.com/manage/s/article/K000151368

Frequently Asked Questions

What is CVE-2025-55036? +

When BIG-IP SSL Orchestrator explicit forward proxy is configured on a virtual server and the proxy connect feature is enabled, undisclosed traffic may cause memory corruption. 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-2025-55036? +

CVE-2025-55036 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-2025-55036? +

CVE-2025-55036 affects products from f5, specifically: big-ip_ssl_orchestrator. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-55036? +

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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