What is CVE-2026-3823?

CVE-2026-3823 is a high-severity vulnerability in Atop Technologies Ehg2408, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-03-09.

How severe is CVE-2026-3823?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Atop Technologies Ehg2408

CVE-2026-3823

EHG2408 series switch developed by Atop Technologies has a Stack-based Buffer Overflow vulnerability, allowing unauthenticated remote attackers to control the program's execution flow and execute arbitrary code.

Vulnerability class: Buffer Overflow

EPSS: 0.001 (23.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Atop Technologies Ehg2408 — versions 0
Atop Technologies Ehg2408-2sfp — versions 0

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

www.twcert.org.tw/tw/cp-132-10752-5a4d9-1.html (third-party-advisory)
www.twcert.org.tw/en/cp-139-10753-e091e-2.html (third-party-advisory)

Frequently asked questions

What is CVE-2026-3823?: CVE-2026-3823 is a high-severity vulnerability in Atop Technologies Ehg2408, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-03-09.
How severe is CVE-2026-3823?: High severity. CVSS v3 base score is 8.8 out of 10.