What is CVE-2026-3630?

CVE-2026-3630 is a critical-severity vulnerability in Deltaww Commgr2, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2026-03-09.

How severe is CVE-2026-3630?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Deltaww Commgr2

CVE-2026-3630

Delta Electronics COMMGR2 has Stack-based Buffer Overflow vulnerability.

Vulnerability class: Buffer Overflow

EPSS: 0.010 (58.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Deltaww Commgr2 — versions 0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

759f5e80-c8e1-4224-bead-956d7b33c98b (Vendor Advisory)

Frequently asked questions

What is CVE-2026-3630?: CVE-2026-3630 is a critical-severity vulnerability in Deltaww Commgr2, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2026-03-09.
How severe is CVE-2026-3630?: Critical severity. CVSS v3 base score is 9.8 out of 10.