View CSAF

1. EXECUTIVE SUMMARY

• CVSS v4 6.8
• ATTENTION: Low attack complexity
• Vendor: Delta Electronics
• Equipment: DIAScreen
• Vulnerabilities: Out-of-bounds Write

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to write data outside of the allocated memory buffer.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Delta Electronics DIAScreen are affected:

• DIAScreen: Version 1.6.0 and prior

3.2 VULNERABILITY OVERVIEW

3.2.1 OUT-OF-BOUNDS WRITE CWE-787

Delta Electronics DIAScreen can write data outside of the intended memory buffer when a valid user opens a maliciously crafted project file.

CVE-2025-59297 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.6 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H).

A CVSS v4 score has also been calculated for CVE-2025-59297. A base score of 6.8 has been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N).

3.2.2 OUT-OF-BOUNDS WRITE CWE-787

Delta Electronics DIAScreen can write data outside of the intended memory buffer when a valid user opens a maliciously crafted project file.

CVE-2025-59298 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.6 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H).

A CVSS v4 score has also been calculated for CVE-2025-59298. A base score of 6.8 has been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N).

3.2.3 OUT-OF-BOUNDS WRITE CWE-787

Delta Electronics DIAScreen can write data outside of the intended memory buffer when a valid user opens a maliciously crafted project file.

CVE-2025-59299 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.6 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H).

A CVSS v4 score has also been calculated for CVE-2025-59299. A base score of 6.8 has been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N).

3.2.4 OUT-OF-BOUNDS WRITE CWE-787

Delta Electronics DIAScreen can write data outside of the intended memory buffer when a valid user opens a maliciously crafted project file.

CVE-2025-59300 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.6 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H).

A CVSS v4 score has also been calculated for CVE-2025-59300. A base score of 6.8 has been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

• CRITICAL INFRASTRUCTURE SECTORS: Energy
• COUNTRIES/AREAS DEPLOYED: Worldwide
• COMPANY HEADQUARTERS LOCATION: Taiwan

3.4 RESEARCHER

Natnael Samson, working with Trend Micro Zero Day Initiative, reported these vulnerabilities to CISA.

4. MITIGATIONS

Delta Electronics has released v1.6.1 of DIAScreen and recommends users install this update on all affected systems.

For more information, see Delta Electronics’ advisory Delta-PCSA-2025-00018.

CISA recommends users take the following measures to protect themselves from social engineering attacks:

• Do not click web links or open attachments in unsolicited email messages.
• Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
• Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

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.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. These vulnerabilities are not exploitable remotely.

5. UPDATE HISTORY

• October 7, 2025: Initial Publication