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Delta Electronics COMMGR

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1. EXECUTIVE SUMMARY

  • CVSS v4 9.3
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: Delta Electronics
  • Equipment: COMMGR
  • Vulnerability: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

2. 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.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of COMMGR, a software management platform that contain virtual PLCs, are affected:

  • COMMGR (Version 1): All versions
  • COMMGR (Version 2): All versions

3.2 VULNERABILITY OVERVIEW

3.2.1 USE OF CRYPTOGRAPHICALLY WEAK PSEUDO-RANDOM NUMBER GENERATOR (PRNG) CWE-338

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.

CVE-2025-3495 has been assigned to this vulnerability. A CVSS v3.1 base score of 9.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2025-3495. A base score of 9.3 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities, Communications, Crit

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