Is CVE-2020-5807 actively exploited?

No active exploitation of CVE-2020-5807 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-5807 be exploited remotely?

Yes. CVE-2020-5807 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-5807?

CVE-2020-5807 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2020-5807

CWE-755Published: December 29, 2020· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

An unauthenticated remote attacker can send data to RsvcHost.exe listening on TCP port 5241 to add entries in the FactoryTalk Diagnostics event log. The attacker can specify long fields in the log entry, which can cause an unhandled exception in wcscpy_s() if a local user opens FactoryTalk Diagnostics Viewer (FTDiagViewer.exe) to view the log entry. Observed in FactoryTalk Diagnostics 6.11. All versions of FactoryTalk Diagnostics are affected.

NVD Source

Technical Analysis

CVE-2020-5807 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 availability disruption (denial of service), with a CVSS base score of 7.5.