Is CVE-2021-30642 actively exploited?

No active exploitation of CVE-2021-30642 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-30642 be exploited remotely?

Yes. CVE-2021-30642 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-30642?

CVE-2021-30642 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2021-30642

CWE-78Published: April 27, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

An input validation flaw in the Symantec Security Analytics web UI 7.2 prior 7.2.7, 8.1, prior to 8.1.3-NSR3, 8.2, prior to 8.2.1-NSR2 or 8.2.2 allows a remote, unauthenticated attacker to execute arbitrary OS commands on the target with elevated privileges.

NVD Source

Technical Analysis

CVE-2021-30642 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.