CVE-2026-76461 Cisco Secure Email Gateway: database injection
In plain words: Text typed into the app ends up changing the database query behind it. Reading, changing or stealing data from the database.
Confirmed exploited by CISA on · US federal patch deadline Sep 17, 2026
What to do
- Install Cisco's security update for Secure Email Gateway. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Patch edge devices first — attackers often start scanning for them within hours of a fix.
- Never expose the device's admin page to the internet.
- After patching a device that was exposed, follow the vendor's compromise checks, end active sessions and change passwords.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: They face the internet and guard the whole network, so a flaw here can hand attackers a way in — and these devices usually run no antivirus, so break-ins go unnoticed.
The details
- Official name
- Cisco Secure Email Gateway SQL Injection Vulnerability
- Product
- Cisco Secure Email Gateway
- CISA description
- Cisco AsyncOS software for Cisco Secure Email Gateway (SEG) contains a SQL injection vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary commands with root privileges on the underlying operating system.
- Type of flaw
- Database injection (CWE-89)
- Confirmed exploited
- Sep 14, 2026
- US federal patch deadline
- Sep 17, 2026
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Answering about CVE-2026-76461 ·
Questions about CVE-2026-76461
Is CVE-2026-76461 being exploited?
Yes. CISA added CVE-2026-76461 to its Known Exploited Vulnerabilities catalog on Sep 14, 2026, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2026-76461?
Install Cisco's security update for Secure Email Gateway. If no update exists, follow the vendor's workaround or stop using the product until one ships. Patch edge devices first — attackers often start scanning for them within hours of a fix.
Am I affected by CVE-2026-76461?
Only if you use Cisco Secure Email Gateway. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.