CVE-2020-3402

mediumpriority · track · 31OT risk · elevatedEPSS 0.016 · 75 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.58% (75th) EPSS

CVSS 5 · medium

Is it mine?

4 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-28

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco Unified IP Interactive Voice Response (IVR)cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
WorkaroundCisco Unified IP Interactive Voice Response (IVR)cisco_csaf
There is a workaround that addresses this vulnerability. It is possible to configure certificate-based authentication for the vulnerable interface. This is documented in the Secure JMX Communication between OAMP and Call Server using Mutual Authentication section of the Configuration Guide for Cisco Unified Customer Voice Portal, Release 12.5(1) ["https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cust_contact/contact_center/customer_voice_portal/cvp_12_5/configuration/guide/ccvp_b_configuration-guide-12-5-1/ccvp_b_configuration-guide-12-5-1_chapter_010001.html?bookSearch=true"].

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · ENISA EU

v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · psirt@cisco.com USexploitability 3.9 · impact 1.4

v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · Cisco PSIRT US

v3.15.3mediumAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-306USprimaryCWE-306US

affected products (4)

Products and version ranges known to be affected.

Cisco Cisco Unified IP Interactive Voice Response (IVR)all versionscisco_csafUS
Cisco Cisco Unified IP Interactive Voice Response (IVR)≤ n/aenisa_euvdEU
Cisco Systems Inc. Cisco Unified Customer Voice Portal≤ 12.5(1)fstec_bduRU
cisco unified customer voice portal≤ 12.5\(1\)nvdUScpe:2.3:a:cisco:unified_customer_voice_portal:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-cvp-info-dislosure-NZBEwj9VCisco Unified Customer Voice Portal Information Disclosure Vulnerability2020-07-01csaf · cisco_csafUS
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. There are workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cvp-info-dislosure-NZBEwj9V ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cvp-info-dislosure-NZBEwj9V"]

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisco_csaf nvd NVD CVE.org MITRE

published 2020-07-02modified 2026-06-17

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references (7)

External citations — patches, advisories, analysis.

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