CVE-2021-20607: Integer Underflow

Published Dec 17, 2021
·
Updated

Integer Underflow vulnerability in Mitsubishi Electric GX Works2 versions 1.606G and prior, Mitsubishi Electric MELSOFT Navigator versions 2.84N and prior and Mitsubishi Electric EZSocket versions 5.4 and prior allows an attacker to cause a DoS condition in the software by getting a user to open malicious project file specially crafted by an attacker.

Affected Software

5 affected components
Mitsubishi Electric GX Works2: Versions 1.606G and prior
Mitsubishi Electric MELSOFT Navigator: Versions 2.84N and prior
Mitsubishielectric Ezsocket<=5.4
Mitsubishielectric Gx Works2<=1.606g
Mitsubishielectric Melsoft Navigator

Event History

Dec 17, 2021
CVE Published
via MITRE·04:10 PM
Data Sourced
via MITRE·04:10 PM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2021-20607?

The severity of CVE-2021-20607 is medium with a severity value of 5.5.

2

Which software versions are affected by CVE-2021-20607?

Mitsubishi Electric GX Works2 versions 1.606G and prior, Mitsubishi Electric MELSOFT Navigator versions 2.84N and prior, and Mitsubishi Electric EZSocket versions 5.4 and prior are affected by CVE-2021-20607.

3

How does CVE-2021-20607 vulnerability occur?

CVE-2021-20607 is an integer underflow vulnerability that allows an attacker to cause a DoS condition in the affected software by getting a user to open malicious files.

4

What is the Common Weakness Enumeration (CWE) ID for CVE-2021-20607?

The Common Weakness Enumeration (CWE) ID for CVE-2021-20607 is CWE-191.

5

Where can I find more information about CVE-2021-20607?

You can find more information about CVE-2021-20607 at the following references: [link1](https://jvn.jp/vu/JVNVU93817405/index.html), [link2](https://us-cert.cisa.gov/ics/advisories/icsa-21-350-05), [link3](https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-021_en.pdf).

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