Is CVE-2020-5801 actively exploited?

No active exploitation of CVE-2020-5801 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-5801 be exploited remotely?

Yes. CVE-2020-5801 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-5801?

CVE-2020-5801 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2020-5801

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

7.5

CVSS v3.1

Official Description

An attacker can craft and send an OpenNamespace message to port 4241 with valid session-id that triggers an unhandled exception in CFTLDManager::HandleRequest function in RnaDaSvr.dll, resulting in process termination. Observed in FactoryTalk Linx 6.11. All versions of FactoryTalk Linx are affected.

NVD Source

Technical Analysis

CVE-2020-5801 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.