What is CVE-2026-20147?

CVE-2026-20147 is a critical-severity vulnerability in Cisco Identity Services Engine Software, classified under Command Injection. CVSS score: 9.9/10. Published 2026-04-15.

How severe is CVE-2026-20147?

Critical severity. CVSS v3 base score is 9.9 out of 10.

RCE in Cisco Identity Services Engine Software

CVE-2026-20147

A vulnerability in Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have vali…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.003 (55.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Cisco Identity Services Engine Software — versions 3.1.0, 3.1.0 p1, 3.1.0 p3
Cisco Ise Passive Identity Connector — versions 3.2.0, 3.1.0, 3.3.0

Weakness classification (CWE)

CWE-77 — Command Injection

References

cisco-sa-ise-rce-traversal-8bYndVrZ

Frequently asked questions

What is CVE-2026-20147?: CVE-2026-20147 is a critical-severity vulnerability in Cisco Identity Services Engine Software, classified under Command Injection. CVSS score: 9.9/10. Published 2026-04-15.
How severe is CVE-2026-20147?: Critical severity. CVSS v3 base score is 9.9 out of 10.