CVE-2026-76454 Cisco Smart Software Manager On-Prem Unauthenticated API Vulnerability
Unauthenticated remote attackers can write arbitrary files or cause denial of service in Cisco License On-Prem due to improper input validation.
- 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-2026-76454?
CVE-2026-76454 is a critical path traversal 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 Cisco Smart Licensing Utility API of Cisco License On-Prem, formerly Cisco Smart Software Manager On-Prem (SSM On-Prem), could allow an unauthenticated, remote attacker to write arbitrary files to the system or cause a DoS condition on an affected application. This vulnerability is due to improper input validation and a lack of authentication in the management API. An attacker could exploit this vulnerability by sending a crafted request to the affected API. A successful exploit could allow the attacker to modify system files or cause a DoS condition.
Weakness: CWE-23
Which versions are affected by CVE-2026-76454?
How do I fix CVE-2026-76454?
No fix has been published for CVE-2026-76454 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-76454 being exploited?
There is no known exploitation of CVE-2026-76454 in the wild and no public exploit code.
Sources
Also known as GHSA-p5v8-p64j-pj8c.