Medium severity · published Apr 15, 2026
CVE-2026-20078
Cisco Unity Connection Arbitrary File Download Vulnerability
6.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CU
Cisco Unity Connection · Cisco
12.5(1); 12.5(1)SU1; 12.5(1)SU2; 12.5(1)SU3; 12.5(1)SU4; 14; +16 more · source: vendor
UC
Unity Connection · Cisco
through 12.5; 14.0; 14su1; 14su2; 14su3; 14su3a; +6 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20078
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20078
Vendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-unity-file-download-RmKEVWPx
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