Is CVE-2021-20136 actively exploited?

No active exploitation of CVE-2021-20136 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-20136 be exploited remotely?

Yes. CVE-2021-20136 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-20136?

CVE-2021-20136 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2021-20136

CWE-306Published: November 1, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

ManageEngine Log360 Builds < 5235 are affected by an improper access control vulnerability allowing database configuration overwrite. An unauthenticated remote attacker can send a specially crafted message to Log360 to change its backend database to an attacker-controlled database and to force Log360 to restart. An attacker can leverage this vulnerability to achieve remote code execution by replacing files executed by Log360 on startup.

NVD Source

Technical Analysis

CVE-2021-20136 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.