CVE-2026-3823 | EHG2408 series switch developed by Atop Technologies has a S… | CVSS 9.8 CRITICAL

Description

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.

Metadata

CVE ID: CVE-2026-3823
State: PUBLISHED
Assigner: twcert
Reserved: 2026-03-09 03:01 UTC
Published: 2026-03-09 06:23 UTC
Last updated: 2026-07-07 06:24 UTC
Primary CWE: CWE-121
CWE-121 Stack-based buffer overflow
Vendor / Product: Atop Technologies / EHG2408
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: total

Affected products (2)

Vendor	Product	Platform	Versions
Atop Technologies	EHG2408	—	0 < 3.36
Atop Technologies	EHG2408-2SFP	—	0 < 3.36

Weakness (CWE)

CWE	Source	Description
CWE-121	cna	CWE-121 Stack-based buffer overflow

CVSS scores (2)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3	CRITICAL	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References (2)