CVE-2025-3495: Delta Electronics COMMGR · PRNG
Affects Delta Electronics COMMGRSource CVE Database V5
Not known to be exploited · CVSS 9.8 Critical.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.7% chance of exploitation in 30 days – higher than 53% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 16 Apr 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Delta Electronics COMMGR | Affected
| Fixed in– |
AI-suggested
- Immediate network segmentation: Isolate devices running COMMGR from general IT networks and limit access to trusted management stations only.
- Implement strict firewall rules to restrict inbound traffic to COMMGR services, allowing only known and authorized IP addresses.
- Monitor network traffic for unusual session ID patterns or brute force attempts targeting COMMGR session management.
- Employ intrusion detection/prevention systems (IDS/IPS) with signatures or heuristics tuned to detect exploitation attempts related to weak session ID generation.
- Engage with Delta Electronics for updates or patches; if none are available, consider temporary compensating controls such as disabling remote access or replacing the vulnerable software with alternatives.
- Conduct regular audits of devices running COMMGR to identify unauthorized code execution or anomalous behavior.
- Educate operational technology (OT) and security teams about this vulnerability and ensure incident response plans include scenarios involving COMMGR compromise.
Description
Delta Electronics COMMGR v1 and v2 uses insufficiently randomized values to generate session IDs (CWE-338). An attacker could easily brute force a session ID and load and execute arbitrary code.