Delta Electronics COMMGR
1. EXECUTIVE SUMMARY
- CVSS v4 8.8
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Delta Electronics
- Equipment: COMMGR
- Vulnerabilities: Stack-based Buffer Overflow, Code Injection
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an attacker to execute arbitrary code.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of Delta Electronics COMMGR are affected:
- COMMGR: Versions v2.9.0 and prior
3.2 VULNERABILITY OVERVIEW
3.2.1 STACK-BASED BUFFER OVERFLOW CWE-121
Delta Electronics COMMGR versions 2.9.0 and prior are vulnerable to a Stack-based Buffer Overflow vulnerability that could allow an attacker to execute arbitrary code by crafting specially designed .isp files.
CVE-2025-53418 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H).
A CVSS v4 score has also been calculated for CVE-2025-53418. A base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N).
3.2.2 IMPROPER CONTROL OF GENERATION OF CODE ('CODE INJECTION') CWE-94
Delta Electronics COMMGR versions 2.9.0 and prior are vulnerable to a Code Injection vulnerability that could allow an attacker to execute arbitrary code by crafting specially designed .isp files.
CVE-2025-53419 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:N/UI:R/S:U/C:H/I:H/A:H).
A CVSS v4 score has also been calculated for CVE-2025-53419. A base score of 8.4 has been calculated; the CVSS vector string is (AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).
3.3 BACKGROUND
- CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
- COUNTRIES/AREAS DEPLOYED: Worldwide
- COMPANY HEADQUARTERS LOCATION: Taiwan
3.4 RESEARCHER
Delta Electronics reported CVE-2025-53418 to CISA. Guillaume Orlando working with Trend Micro Zero Day Initiative reported CVE-2025-53419 to CISA.
4. MITIGATIONS
Delta Electronics recommends users to download and update to v2.10.0 or later.
Delta Electronics offers users the following general recommendations:
- Do not click on untrusted Internet links or open unsolicited attachments in emails.
- Avoid exposing control systems and equipment to the Internet.
- Place control system networks and remote devices behind firewalls and isolate them from the business network.
- When remote access is required, use a secure access method, such as a virtual private network (VPN).
For more information, see Delta Electroncis's Advisory.
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:
- 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.
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
5. UPDATE HISTORY
- August 28, 2025: Initial Publication
This product is provided subject to this Notification and this Privacy & Use policy.
Vendor
- Delta Electronics