Successful exploitation of these vulnerabilities could allow an attacker to execute arbitrary code, disclose information, alter information, or cause a denial-of-service (DoS) condition.
The following versions of Mitsubishi Electric MELSOFT Update Manager are affected:
Mitsubishi Electric MELSOFT Update Manager is vulnerable to an Integer Underflow vulnerability in 7-zip, included in MELSOFT Update Manager, that could allow a remote attacker to execute arbitrary code by decompressing a specially crafted compressed file. As a result, the attacker may disclose, tamper with information, or cause a denial-of-service (DoS) condition on the product.
CVE-2024-11477 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.1 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).
Mitsubishi Electric MELSOFT Update Manager is vulnerable to an Protection Mechanism Failure vulnerability in 7-zip, included in MELSOFT Update Manager, that could allow an attacker to execute arbitrary code by decompressing a specially crafted compressed file. As a result, the attacker may disclose, tamper with information, or cause a denial-of-service (DoS) condition on the product.
CVE-2025-0411 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
Mitsubishi Electric reported these vulnerabilities to CISA.
Mitsubishi Electric recommends users take the following actions to minimize the risk of exploiting these vulnerabilities.
For users in Japan:
Update Procedure:
For users outside Japan:
For users who cannot immediately update the product, Mitsubishi Electric recommends the following mitigation measures to minimize the risk of exploiting these vulnerabilities.
For more information, see Mitsubishi Electric 2025-006.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. These vulnerabilities have a high attack complexity.