What’s Vulnerable › Vulnerabilities

CVE-2021-20674

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-12 · updated 2026-06-17
• Weakness: CWE-427

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.

Affected products

• NTT TechnoCross Corporation Installer of MagicConnect Client program: before 2021-03-01 — fixed in 2021-03-01

How to fix

Upgrade to a fixed version: NTT TechnoCross Corporation Installer of MagicConnect Client program 2021-03-01. Check the vendor advisory for mitigations.

References

• https://jvn.jp/en/jp/JVN18056666/index.html
• https://www.magicconnect.net/information/202103110900-2
• https://jvn.jp/en/jp/JVN18056666/index.html
• https://www.magicconnect.net/information/202103110900-2

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