CVE-2026-20328 Cisco License On-Prem - Authentication Bypass

Cisco License On-Prem contains a broken authentication caused by improper checks during the password reset process, letting unauthenticated remote attackers reset arbitrary user passwords and gain unauthorized access, exploit requires sending a crafted request to the web interface.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.52% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
7 October 2026
Updated
15 October 2026
Weakness
CWE-862

Vendor fix

Update to the latest available version that patches the password reset process.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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