Auth bypass in Cisco License On-Prem
CVE-2026-20328
A vulnerability in the web-based management interface of Cisco License On-Prem, formerly Cisco Smart Software Manager On-Prem (SSM On-Prem), could allow an unauthenticated, remote attacker to gain unauthorized access to an affected application. This vulnerability is due to improper checks during the password reset process. An attacker could exploit this vulnerability by sending a malicious request to the web-based management interface. A successful exploit could allow the attacker to reset the password of an arbitrary account, including high-privileged administrative user accounts, possibly allowing the attacker to gain unauthorized access to the application as any user.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Cisco License On-Prem — versions 1.1, 1.2, 1.3
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-20328?
- CVE-2026-20328 is a critical-severity vulnerability in Cisco License On-Prem, classified under Missing Authorization. CVSS score: 9.1/10. Published 2026-10-07.
- How severe is CVE-2026-20328?
- Critical severity. CVSS v3 base score is 9.1 out of 10.