Is CVE-2019-13921 actively exploited?

No active exploitation of CVE-2019-13921 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-13921 be exploited remotely?

Yes. CVE-2019-13921 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-13921?

CVE-2019-13921 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2019-13921

CWE-410Published: October 10, 2019· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

A vulnerability has been identified in SIMATIC WinAC RTX (F) 2010 (All versions < SP3 Update 1). Affected versions of the software contain a vulnerability that could allow an unauthenticated attacker to trigger a denial-of-service condition. The vulnerability can be triggered if a large HTTP request is sent to the executing service. The security vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise availability of the service provided by the software.

NVD Source

Technical Analysis

CVE-2019-13921 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.