CVE-2026-20300 Cisco Identity Services Engine SQL Injection Vulnerability
Authenticated attackers with low-privileged admin credentials can perform SQL injection to read or modify database data in Cisco ISE.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20300?
CVE-2026-20300 is a high-severity SQL injection vulnerability in Cisco Identity Services Engine Software, published on 16 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability in Cisco ISE could allow an authenticated, remote attacker to conduct SQL injection attacks on an affected device. To exploit this vulnerability, the attacker must have at least low-privileged administrative credentials. This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to read or modify data in the underlying database.
Weakness: CWE-89
Which versions are affected by CVE-2026-20300?
How do I fix CVE-2026-20300?
No fix has been published for CVE-2026-20300 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-20300 being exploited?
There is no known exploitation of CVE-2026-20300 in the wild and no public exploit code.
Sources
Also known as GHSA-j6jc-3rmg-h4f7.