Live › vulnerability › CVE-2026-94127
Go to dashboardF5 BIG-IP APM has a heap-based buffer overflow that occurs when an access policy and an OAuth profile are configured on a virtual server. An unauthenticated remote attacker can exploit it to run code on the device, and CISA lists it as known exploited.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 5h before NVD. All times on this page are UTC.
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| F5 BIG-IP APM | vendor | – | – |
| f5 big-ip access policy manager | vendor | >= 17.0.0, <= 17.1.3 | – |
| f5 big-ip access policy manager | vendor | >= 17.5.0, <= 17.5.1 | – |
| f5 big-ip access policy manager | vendor | = 21.1.0 | – |
Check whether any BIG-IP virtual server has both an APM access policy and an OAuth profile attached; the sources do not give a specific command.
What vendors did on their customers’ behalf. Holds only for traffic through them; patching is still the fix.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
WAF Release - 2026-10-06 · Changelog
New updates and improvements at Cloudflare.
October 6, 2026
This release introduces a new detection to mitigate a heap-based buffer overflow vulnerability in F5 BIG-IP, and enhances existing command injection protections by incorporating tested beta logic into the baseline rule.
Key Findings
| Ruleset | Rule ID | Legacy Rule ID | Description | Previous Action | New Action | Comments |
|---|---|---|---|---|---|---|
| Cloudflare Managed Ruleset | ...a056caff | N/A | Command Injection - Generic 8 - uri - Beta | Log | Block | This rule is merged into the original rule "Command Injection - Generic 8 - uri" (ID: ...ee159e2e). |
| Cloudflare Managed Ruleset | ...7206c737 | N/A | F5 BIG-IP - UnAuth Heap-Overflow - CVE:CVE-2026-94127 | Log | Block | This is a new detection. |
| Cloudflare Managed Ruleset | ...549f7356 | N/A | Next.js - Cache Poisoning - CVE:CVE-2026-94543 | Block | Block | Rule metadata description refined. Detection unchanged. |
This page as .md · .json · in your agent: get_signal("CVE-2026-94127")
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