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Vulnerabilities

Vulnerability · CVE-2026-20078

Multiple vulnerabilities in Cisco Unity Connection could allow an authenticated, remote attacker to download arbitrary files from an affected system.

Published Apr 15, 2026 · catalog updated Jun 17, 2026 · unity connection

Check if you run it

No confirmed exploitation is on record for CVE-2026-20078. EPSS is 0.39%. Act only if a listed version of unity connection is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.39%
Remediation
Advisory link
Affected products
cpe cisco/unity connection

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe cisco/unity connection14.0
  • cpe cisco/unity connection14su1
  • cpe cisco/unity connection14su2
  • cpe cisco/unity connection14su3
  • cpe cisco/unity connection14su3a
  • cpe cisco/unity connection14su4
  • cpe cisco/unity connection14su5

How to fix CVE-2026-20078

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-20078. EPSS is 0.39%. Act only if a listed version of unity connection is installed.

Which versions are affected?

Compare what you have installed with cisco/unity connection 14.0; cisco/unity connection 14su1; cisco/unity connection 14su2; cisco/unity connection 14su3. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-23. EPSS 0.39%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Cisco security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 15, 2026 · NIST NVD

    Detected

    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

  2. Jun 17, 2026 · NIST NVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2026-20078

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-20078

    30-day exploitation probability 0.4%

    first.org
  • NIST NVDVulnerability recordCVE-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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.