Vulnerability in F5 BIG-IP (CVE-2016-9251, CVSS 8.8)

Summary

Vulnerability in F5 BIG-IP (CVE-2016-9251). Successful exploitation can lead to full system takeover.

Original description

The description as published by the source.

In F5 BIG-IP 12.0.0 through 12.1.2, an authenticated attacker may be able to cause an escalation of privileges through a crafted iControl REST connection.

Source: NIST National Vulnerability Database NVD

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2016-9251 has been found in F5 BIG-IP.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "F5 BIG-IP CVE-2016-9251" on the vendor's site.

CVE-2016-9251 (F5 BIG-IP) — CWE-264 / CVSS v3 8.8
Attack vector: remote (network-reachable) / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (CWE-264) exists in F5 BIG-IP.

📍 Affected scope

Check the vendor advisory for the affected versions of F5 BIG-IP.

🔥 Severity

Severity: High (CVSS 8.8/10). Successful exploitation can lead to full system takeover.

🔧 How to fix

Update to the patched release per vendor advisory.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposure identify
```
Audit SBOM/dependencies for affected components.
```
資産台帳・SBOM・依存マニフェストで F5 BIG-IP を使っているサービスとバージョンを洗い出す。
2
Post-deployment verification verify
```
Confirm patched version is live in production
```
パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

References

patch support.f5.com
web securitytracker.com