Path Traversal in Cisco Unity Connection
CVE-2026-20078
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (31.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Cisco Unity Connection — versions 12.5(1), 12.5(1)SU1, 12.5(1)SU2
- Cisco Unity Connection — versions 14.0, 14su1, 14su2
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-20078?
- CVE-2026-20078 is a medium-severity vulnerability in Cisco Unity Connection, classified under Relative Path Traversal. CVSS score: 6.5/10. Published 2026-04-15.
- How severe is CVE-2026-20078?
- Medium severity. CVSS v3 base score is 6.5 out of 10.