ICSA-25-105-07
Vulnerability from csaf_cisa - Published: 2025-04-15 06:00 - Updated: 2025-09-04 06:00Summary
Delta Electronics COMMGR (Update A)
Notes
Legal Notice: All information products included in https://us-cert.cisa.gov/ics are provided "as is" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see https://us-cert.cisa.gov/tlp/.
Risk evaluation: Successful exploitation of this vulnerability could allow for an attacker to remotely access the AS3000Simulator family in the COMMGR software and execute arbitrary code.
Critical infrastructure sectors: Commercial Facilities, Communications, Critical Manufacturing, Energy, Healthcare and Public Health
Countries/areas deployed: Worldwide
Company headquarters location: Taiwan
Recommended Practices: CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability.
Recommended Practices: CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
Recommended Practices: 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.
Recommended Practices: CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Recommended Practices: 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.
Recommended Practices: Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
Recommended Practices: No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.
9.8 (Critical)
Mitigation
COMMGR software Version 1 has reached end of life (EOL).
Mitigation
Delta Electronics recommends users of COMMGR software Version 1 to take the following precautions:
Mitigation
Minimize network exposure for all control system devices and software, ensuring they are not accessible from the Internet.
Mitigation
When remote access is required, use secure methods such as Virtual Private Networks (VPNs).
Mitigation
Place control system networks and remote devices behind firewalls and isolate them from the business network.
Mitigation
Never connect programming software to any network other than the one intended for that device.
Mitigation
Delta Electronics has released COMMGR v2.10.0.
https://diastudio.deltaww.com/home/downloads?sec=…
Mitigation
For more information, see Delta Electronics's Advisory.
https://filecenter.deltaww.com/news/download/doc/…
References
Acknowledgments
Trend Micro's Zero Day Initiative (ZDI)
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"text": "Commercial Facilities, Communications, Critical Manufacturing, Energy, Healthcare and Public Health",
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"title": "Delta Electronics COMMGR (Update A)",
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"name": "\u003c=v2.9.0",
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"vulnerabilities": [
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"cve": "CVE-2025-3495",
"cwe": {
"id": "CWE-338",
"name": "Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)"
},
"notes": [
{
"category": "summary",
"text": "The software uses insufficiently randomized values to generate session IDs. An attacker could easily brute force a session ID and load and execute arbitrary code. ",
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{
"category": "mitigation",
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"product_ids": [
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},
{
"category": "mitigation",
"details": "Minimize network exposure for all control system devices and software, ensuring they are not accessible from the Internet.",
"product_ids": [
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"CSAFPID-0002"
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},
{
"category": "mitigation",
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},
{
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},
{
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},
{
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"url": "https://filecenter.deltaww.com/news/download/doc/Delta-PCSA-2025-00005_COMMGR%20-%20Insufficient%20Randomization%20Authentication%20Bypass.pdf"
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"scores": [
{
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"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"products": [
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]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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