Is CVE-2020-3280 actively exploited?

No active exploitation of CVE-2020-3280 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-3280 be exploited remotely?

Yes. CVE-2020-3280 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-3280?

CVE-2020-3280 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2020-3280

CWE-20Published: May 22, 2020· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2020-3280 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.