Is CVE-2020-13553 actively exploited?

No active exploitation of CVE-2020-13553 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-13553 be exploited remotely?

No. CVE-2020-13553 requires local access to exploit.

What is the CVSS score of CVE-2020-13553?

CVE-2020-13553 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2020-13553

CWE-276Published: February 17, 2021· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

An exploitable local privilege elevation vulnerability exists in the file system permissions of Advantech WebAccess/SCADA 9.0.1 installation. In webvrpcs Run Key Privilege Escalation in installation folder of WebAccess, an attacker can either replace binary or loaded modules to execute code with NT SYSTEM privilege.

NVD Source

Technical Analysis

CVE-2020-13553 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

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 8.8.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.