Is CVE-2021-36231 actively exploited?

No active exploitation of CVE-2021-36231 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-36231 be exploited remotely?

Yes. CVE-2021-36231 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-36231?

CVE-2021-36231 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2021-36231

CWE-502Published: August 31, 2021· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

Deserialization of untrusted data in multiple functions in MIK.starlight 7.9.5.24363 allows authenticated remote attackers to execute operating system commands by crafting serialized objects.

NVD Source

Technical Analysis

CVE-2021-36231 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.

From a weakness classification perspective (CWE-502): Insecure deserialization vulnerabilities allow attackers to inject malicious objects during deserialization, potentially enabling remote code execution.