CVE-2026-20078 Cisco Unity Connection Arbitrary File Download Vulnerability
An authenticated administrator can download arbitrary files from Cisco Unity Connection via crafted HTTPS requests due to improper input sanitization.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20078?
CVE-2026-20078 is a medium-severity path traversal vulnerability in Cisco Unity Connection, published on 15 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Multiple vulnerabilities in Cisco Unity Connection could allow an authenticated, remote attacker to download arbitrary files from an affected system. To exploit these vulnerabilities, the attacker must have valid administrative credentials. These vulnerabilities are due to improper sanitization of user input to the web-based management interface. An attacker could exploit these vulnerabilities by sending a crafted HTTPS request. A successful exploit could allow the attacker to download arbitrary files from an affected system.
Weakness: CWE-23
Which versions are affected by CVE-2026-20078?
It affects 1 product.
Products include Cisco Unity Connection.
How do I fix CVE-2026-20078?
No fix has been published for CVE-2026-20078 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-2026-20078 being exploited?
There is no known exploitation of CVE-2026-20078 in the wild and no public exploit code.
Other vulnerabilities in Cisco Unity Connection
Sources
Also known as GHSA-q6x9-g748-283m.