CVE-2026-3631: Buffer Over-read DoS Vulnerability in COMMGR2

High severity · published Mar 9, 2026

CVE-2026-3631

Buffer Over-read DoS Vulnerability in COMMGR2

7.5

CVSS

0.9%

EPSS

On KEV

Description

Delta Electronics COMMGR2 has Buffer Over-read DoS vulnerability.

CVSS vector

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

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.9% · higher than 61% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

COMMGR2 · DeltaWW

through 2.11.0 · source: vendor, NVD

Affected product

COMMGR2

DeltaWW

All COMMGR2 CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-3631

CVE.org

https://www.cve.org/CVERecord?id=CVE-2026-3631

Vendor Advisory

https://filecenter.deltaww.com/news/download/doc/Delta-PCSA-2026-00005_COMMGR%202%20Multiple%20Vulnerabilities%20(CVE-2026-3630,%20CVE-2026-3631).pdf