Critical 9.8Published Mar 9, 2026

CVE-2026-3823Atop Technologies｜EHG2408 series switch - Stack-based Buffer Overflow

Updated under an hour ago (Oct 27, 2026, 5:30 AM ET)

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It affects Atop Technologies EHG2408 and 3 other products. Add what you run to find out whether that includes you.

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Every CVE for Atop Technologies EHG2408

Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-121
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: twcert
NVD analysis: Modified
Record last updated: Jul 7, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Atop Technologies EHG2408 atop_technologies:ehg2408 (from the name)	before 3.36	CNA record
Atop Technologies EHG2408-2SFP atop_technologies:ehg2408_2sfp (from the name)	before 3.36	CNA record
blackbeartechhive atop_ehg2408_firmware blackbeartechhive:atop_ehg2408_firmware	before 3.36	NVD
blackbeartechhive atop_ehg2408-2sfp_firmware blackbeartechhive:atop_ehg2408-2sfp_firmware	before 3.36	NVD

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.