What is CVE-2020-3402?

CVE-2020-3402 is a high-severity vulnerability in Cisco Unified Ip Interactive Voice Response (Ivr), classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2020-07-02.

How severe is CVE-2020-3402?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Cisco Unified Ip Interactive Voice Response (Ivr)

CVE-2020-3402

A vulnerability in the Java Remote Method Invocation (RMI) interface of Cisco Unified Customer Voice Portal (CVP) could allow an unauthenticated, remote attacker to access sensitive information on an affected device. The vulnerability exists because certain RMI listeners are not properly authenticated. An attacker could exploit this vulnerability by sending a crafted request to the affected listener. A successful exploit could allow the attacker to access sensitive information on an affected device.

Vulnerability class: Broken Authentication

Published 2020-07-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.016 (75.3th percentile), scored 2026-10-23.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cvp-info… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2020-3402?: CVE-2020-3402 is a high-severity vulnerability in Cisco Unified Ip Interactive Voice Response (Ivr), classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2020-07-02.
How severe is CVE-2020-3402?: High severity. CVSS v3 base score is 7.5 out of 10.