Auth bypass in Cisco Identity Services Engine Software
CVE-2026-76444
A vulnerability in an internal service of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to retrieve sensitive configuration information from an affected device. This vulnerability is due to missing authentication on the Policy Runtime Repository Table (PRRT) service. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to obtain sensitive configuration information from the affected device.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (28.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Cisco Identity Services Engine Software — versions 3.4 Patch 1, 3.4 Patch 2, 3.4 Patch 3
- Cisco Ise Passive Identity Connector — versions 3.4.0, 3.5.0
- Cisco Identity Services Engine — versions 3.4.0, 3.5.0
- Cisco Identity Services Engine Passive Connector — versions 3.4.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-76444?
- CVE-2026-76444 is a medium-severity vulnerability in Cisco Identity Services Engine Software, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2026-09-16.
- How severe is CVE-2026-76444?
- Medium severity. CVSS v3 base score is 5.3 out of 10.