Secuno
ENNL
Book demo

CVE-2026-3823

Blackbeartechhive Atop Ehg2408-2sfp Firmware remote code execution

9.8 CRITICALEPSS 0.99%
  1. Published9 Mar 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Blackbeartechhive Atop Ehg2408-2sfp Firmware< 3.36
Blackbeartechhive Atop Ehg2408 Firmware< 3.36

Remediation

Fixed in
Blackbeartechhive Atop Ehg2408-2sfp Firmware≥ 3.36
Blackbeartechhive Atop Ehg2408 Firmware≥ 3.36

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-10910910.0
A vulnerability was detected in Wavlink WL-WN530BE1-A 251117. This vulnerability…
CVE-2026-854578.1
IBM Planning Analytics 2.0, and 2.1 could allow a remote authenticated attacker to…
CVE-2026-962668.2
IBM Power Systems Firmware FW1060.00 through FW1060.81 is affected by a vulnerability…
CVE-2026-962648.2
IBM Power Systems Firmware FW1060.00 through FW1060.81 is affected by a vulnerability…
CVE-2026-962638.2
IBM Power Systems Firmware FW1120.00 through FW1120.01, FW1110.00 through FW1110.31,…
CVE-2026-962628.2
IBM Power Systems Firmware FW1060.00 through FW1060.81 is affected by a vulnerability…

Frequently asked

Is CVE-2026-3823 being actively exploited?

CVE-2026-3823 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.99%.

How severe is CVE-2026-3823?

CVE-2026-3823 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.99% probability of exploitation.

Which products are affected by CVE-2026-3823?

Affected products include Blackbeartechhive Atop Ehg2408-2sfp Firmware, Blackbeartechhive Atop Ehg2408 Firmware.

How do I fix CVE-2026-3823?

Upgrade affected software to a fixed version, for example Blackbeartechhive Atop Ehg2408-2sfp Firmware 3.36, Blackbeartechhive Atop Ehg2408 Firmware 3.36 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-3823 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.