## https://sploitus.com/exploit?id=03C95DC1-6684-5667-B855-F38C831D669E
# CVE-2026-76461 — Detection & Response Kit
Detection, hunting, and remediation resources for **CVE-2026-76461**, a critical
SQL injection vulnerability in Cisco AsyncOS for Cisco Secure Email Gateway (SEG).
## ⚠️ Disclaimer
This repository contains **defensive content only**: Sigma rules, YARA rules,
technical analysis, indicators of compromise, and remediation guidance.
**It does NOT contain exploit code, PoC, or weaponized tooling.**
The vulnerability has been added to CISA's Known Exploited Vulnerabilities
(KEV) catalog. At the time of publication, no public functional PoC exists.
Use these resources only in authorized environments.
## 📌 Vulnerability Summary
| Field | Value |
|---|---|
| CVE | CVE-2026-76461 |
| Vendor | Cisco Systems, Inc. |
| Product | Cisco Secure Email Gateway (AsyncOS) |
| CWE | CWE-89 (SQL Injection) |
| CVSS v3.1 | 9.8 CRITICAL |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Network (crafted email) |
| Impact | Remote code execution as **root** |
| KEV Added | 2026-09-14 |
| KEV Due Date | 2026-09-17 |
| Public PoC | ❌ None available |
## 🧰 Contents
- [`sigma/`](sigma/) — Sigma detection rules for mail logs, web access, and post-exploitation
- [`yara/`](yara/) — YARA rules for scanning mail artifacts and dropped files
- [`docs/technical-analysis.md`](docs/technical-analysis.md) — Technical breakdown from public sources
- [`docs/iocs.md`](docs/iocs.md) — Indicators of Compromise (Cisco-official + derived)
- [`docs/remediation.md`](docs/remediation.md) — Fixed versions and upgrade steps
## 🚀 Quick Start
### Sigma → Splunk / Elastic / Sentinel
Convert with [sigmac](https://github.com/SigmaHQ/sigma) or
[pySigma](https://github.com/SigmaHQ/pySigma):
```bash
pip install sigma-cli
sigma convert -t splunk sigma/cisco_esa_sqli_mail_logs.yml
sigma convert -t elasticsearch sigma/cisco_esa_sqli_mail_logs.yml