Is CVE-2024-0840 actively exploited?

No active exploitation of CVE-2024-0840 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2024-0840 be exploited remotely?

Yes. CVE-2024-0840 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2024-0840?

CVE-2024-0840 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2024-0840

CWE-141Published: April 29, 2024· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

The Grandstream UCM Series IP PBX before firmware version 1.0.20.52 is affected by a parameter injection vulnerability in the HTTP interface. A remote and authenticated attacker can execute arbitrary code by sending a crafted HTTP request. Authentication may be possible using a default user and password. Affected models are the UCM6202, UCM6204, UCM6208, and UCM6510.

NVD Source

Technical Analysis

CVE-2024-0840 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

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 8.8.