CVE-2026-3823 Atop Technologies｜EHG2408 series switch - Stack-based Buffer Overflow
Unauthenticated remote attackers can execute arbitrary code on Atop Technologies EHG2408 series switches via a stack-based buffer overflow.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3823?
CVE-2026-3823 is a critical memory corruption vulnerability in Atop Technologies EHG2408, published on 9 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-3823?
It affects 2 products.
Products include Blackbeartechhive Atop Ehg2408-2sfp Firmware, Blackbeartechhive Atop Ehg2408 Firmware.
How do I fix CVE-2026-3823?
No fix has been published for CVE-2026-3823 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-3823 being exploited?
There is no known exploitation of CVE-2026-3823 in the wild and no public exploit code.
Sources
Also known as GHSA-xwwx-hh9w-5r7f.