Is CVE-2020-10658 actively exploited?

No active exploitation of CVE-2020-10658 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-10658 be exploited remotely?

Yes. CVE-2020-10658 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-10658?

CVE-2020-10658 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2020-10658

CWE-502Published: January 6, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

The Proofpoint Insider Threat Management Server (formerly ObserveIT Server) before 7.9.1 contains a vulnerability in the ITM application server's WriteImage API. The vulnerability allows an anonymous remote attacker to execute arbitrary code with local administrator privileges. The vulnerability is caused by improper deserialization.

NVD Source

Technical Analysis

CVE-2020-10658 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.

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