CVE-2026-20328 Cisco Smart Software Manager On-Prem Arbitrary Account Password Reset Vulnerability
Unauthenticated attackers can reset arbitrary account passwords, including admin accounts, to gain unauthorized access to Cisco License On-Prem.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20328?
CVE-2026-20328 is a critical authentication bypass vulnerability in Cisco License On-Prem, published on 7 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-20328?
How do I fix CVE-2026-20328?
No fix has been published for CVE-2026-20328 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-20328 being exploited?
There is no known exploitation of CVE-2026-20328 in the wild and no public exploit code.
Sources
Also known as GHSA-v5w6-73vj-7qh9.