← Vulnerability feed

Vulnerability record · CVE-2020-3280 · published 22 May 2020

CVE-2020-3280: Cisco unified contact center express improper input validation vulnerability

Cisco · Unified Contact Center Express

A vulnerability in the Java Remote Management Interface of Cisco Unified Contact Center Express (Unified CCX) could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device. The vulnerability is due to insecure deserialization of user-supplied content by the affected software. An attacker could exploit this vulnerability by sending a malicious serialized Java object to a specific listener on an affected system. A successful exploit could allow the attacker to execute arbitrary code as the root user on an affected device.

9.8 CVSS 3.1 Critical EPSS 6.9% · top 6.1% CWE-20 · Improper input validationCWE-502 · Deserialization of untrusted data
9.8CVSS 3.1 base score, v2 10.0
6.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A vulnerability in the Java Remote Management Interface of Cisco Unified Contact Center Express (Unified CCX) could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device. The vulnerability is due to insecure deserialization of user-supplied content by the affected software. An attacker could exploit this vulnerability by sending a malicious serialized Java object to a specific listener on an affected system. A successful exploit could allow the attacker to execute arbitrary code as the root user on an affected device.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

Track CVE-2020-3280 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2021-44228Apache Log4j2 JNDI lookup remote code executionApache Log4j2 versions 2.0-beta9 through 2.15.0 (excluding 2.12.2, 2.12.3, and 2.3.1) do not protect against attacker-controlled LDAP and other JNDI …KEVEPSS 100%analysed10.0CVE-2024-20253Cisco unified communications manager deserialization of untrusted data vulnerabilityA vulnerability in multiple Cisco Unified Communications and Contact Center Solutions products could allow an unauthenticated, remote attacker to exe…EPSS 2.4%9.8CVE-2025-20358Cisco unified contact center express missing authentication for critical function vulnerabilityA vulnerability in the Contact Center Express (CCX) Editor application of Cisco Unified CCX could allow an unauthenticated, remote attacker to bypass…EPSS 0.92%9.8CVE-2025-20354Cisco unified contact center express unrestricted file upload vulnerabilityA vulnerability in the Java Remote Method Invocation (RMI) process of Cisco Unified CCX could allow an unauthenticated, remote attacker to upload arb…EPSS 0.87%9.8CVE-2018-0403Cisco unified contact center express cross-site scripting vulnerabilityMultiple vulnerabilities in the web-based management interface of Cisco Unified Contact Center Express (Unified CCX) could allow an unauthenticated, …EPSS 2.6%9.8CVE-2017-12337Cisco emergency responder improper authentication vulnerabilityA vulnerability in the upgrade mechanism of Cisco collaboration products based on the Cisco Voice Operating System software platform could allow an u…EPSS 6.4%9.6CVE-2022-20658Cisco unified contact center express vulnerabilityA vulnerability in the web-based management interface of Cisco Unified Contact Center Management Portal (Unified CCMP) and Cisco Unified Contact Cent…EPSS 1.4%8.8CVE-2025-20274Cisco unified intelligence center unrestricted file upload vulnerabilityA vulnerability in the web-based management interface of Cisco Unified Intelligence Center could allow an authenticated, remote attacker to upload ar…EPSS 0.40%

Source: NIST National Vulnerability Database (record CVE-2020-3280), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.