F5 BIG-IP APM Heap-based Buffer Overflow Vulnerability

F5 BIG-IP APM

F5 BIG-IP APM contains a heap-based buffer overflow vulnerability when access policy and an OAuth profile are configured on a virtual server. This vulnerability could allow an unauthenticated attacker to perform remote code execution. Added to CISA KEV on 2026-09-22 (federal deadline 2026-09-25).

First seen: 22 Sept 2026
Last update: 22 Sept 2026, 12:00 UTC
Identifiers: CVE-2026-94127
Source: CISA KEV
On the menu as: VPN & firewalls

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## F5 BIG-IP APM Heap-based Buffer Overflow Vulnerability
Severity: high, exploited in the wild. Patch status: patched.
Affected: F5 BIG-IP APM
Ids: CVE-2026-94127

F5 BIG-IP APM contains a heap-based buffer overflow vulnerability when access policy and an OAuth profile are configured on a virtual server. This vulnerability could allow an unauthenticated attacker to perform remote code execution. Added to CISA KEV on 2026-09-22 (federal deadline 2026-09-25).

## Steps
1. This touches infrastructure (vpn-edge). Look in terraform, ansible, cloud-init, Dockerfiles and docs for the product and version we run. If it isn't in the repo, say so and list what a human should check on the box.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-94127") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://nvd.nist.gov/vuln/detail/CVE-2026-94127
https://pwned.coffee/i/f5-big-ip-apm-heap-based-buffer-overflow-vulnerability-cve-2026-94127

Sources

NVD: CVE-2026-94127

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