CVE-2021-20674

Name: CVE-2021-20674
Creator: NVD / NIST
Published: 2021-03-12T02:15:13.163+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.92%

Last modified Jun 17, 2026

CVE-2021-20674 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Untrusted search path vulnerability in Installer of MagicConnect Client program distributed before 2021 March 1 allows an attacker to gain privileges and via a Trojan horse DLL in an unspecified directory and to execute arbitrary code with the privilege of the user invoking the installer when a terminal is connected remotely using Remote desktop.. EPSS estimates a 0.92% chance of exploitation in the next 30 days.

Description

Untrusted search path vulnerability in Installer of MagicConnect Client program distributed before 2021 March 1 allows an attacker to gain privileges and via a Trojan horse DLL in an unspecified directory and to execute arbitrary code with the privilege of the user invoking the installer when a terminal is connected remotely using Remote desktop.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.92%

55.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-427

Affected Software

Vendor	Product	Versions
Ntt-Tx	Magicconnect	< 2021-03-01

References

https://jvn.jp/en/jp/JVN18056666/index.htmlThird Party Advisory
https://www.magicconnect.net/information/202103110900-2Vendor Advisory
https://jvn.jp/en/jp/JVN18056666/index.htmlThird Party Advisory
https://www.magicconnect.net/information/202103110900-2Vendor Advisory

Timeline

Published: Mar 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-20674?

How severe is CVE-2021-20674?

CVE-2021-20674 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.92% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20674?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-20674?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST