Vulnerability in Cisco Identity Services Engine Software
CVE-2026-76451
A vulnerability in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, remote attacker to conduct an SQL or HQL injection attack on an affected device. This vulnerability is due to insufficient validation of user-supplied input to the affected APIs before it is used to build database queries. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to execute arbitrary SQL or HQL queries against the underlying database, which could allow the attacker to view or modify data that they are not authorized to access. To exploit this vulnerability, the attacker must have valid administrative credentials.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (36.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Cisco Identity Services Engine Software — versions 3.1.0, 3.1.0 p1, 3.1.0 p10
- Cisco Ise Passive Identity Connector — versions 3.1.0, 3.2.0, 3.3.0
- Cisco Identity Services Engine — versions 3.3.0, 3.4.0, 3.5.0
- Cisco Identity Services Engine Passive Connector — versions 3.3.0, 3.4.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-76451?
- CVE-2026-76451 is a medium-severity vulnerability in Cisco Identity Services Engine Software, classified under CWE-564. CVSS score: 4.9/10. Published 2026-09-16.
- How severe is CVE-2026-76451?
- Medium severity. CVSS v3 base score is 4.9 out of 10.