CVE-2026-3823
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductBlackbeartechhive Atop Ehg2408 Firmware
PublishedMar 9, 2026
First seenMar 9, 2026
Weakness typeCWE-121CWE-121
How to fix
Update
- blackbeartechhive atop_ehg2408_firmware3.36 or later
- blackbeartechhive atop_ehg2408-2sfp_firmware3.36 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| blackbeartechhive atop_ehg2408_firmware | v < 3.36 | 3.36 |
| blackbeartechhive atop_ehg2408-2sfp_firmware | v < 3.36 | 3.36 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.