CVE-2025-3495: COMMGR - Insufficient Randomization Authentication Bypass

9.8 CVSS

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.

Classification

CVE ID: CVE-2025-3495

CVSS Base Severity: CRITICAL

CVSS Base Score: 9.8

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem Types

CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Affected Products

Vendor: Delta Electronics

Product: COMMGR

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.07% (probability of being exploited)

EPSS Percentile: 21.97% (scored less or equal to compared to others)

EPSS Date: 2025-04-18 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-3495
https://filecenter.deltaww.com/news/download/doc/Delta-PCSA-2025-00005_COMMGR%20-%20Insufficient%20Randomization%20Authentication%20Bypass_v1.pdf
https://www.cisa.gov/news-events/ics-advisories/icsa-25-105-07

Timeline