CVE-2026-3823Disclosure(blackbeartechhive / atop_ehg2408)

LOWCVSS 9.8 · CRITICAL

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft
Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD 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.

blackbeartechhive CVEs Back to dashboard

2.0/ 10 priority

Sources & remediation

Vendor / third-party advisories

Weakness type (CWE)

CWE-121CWE-787

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

DECLINING

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

atop_ehg2408
atop_ehg2408-2sfp
atop_ehg2408-2sfp_firmware
atop_ehg2408_firmware

Threat summary

Public PoC is present in monitored signal
10 mentions across 4 observed days
Momentum state: declining

What's happening

PoC mentioned or linked in 1 signal
Technical details provided in 8 signals
Disclosure: 9 classified signals
General: 1 classified signal
Peaked 3d ago at 7 mentions (2026-03-09); latest day: 1
10 total mentions across 4 days

Affected systems

Vendors

blackbeartechhive

Products

atop_ehg2408atop_ehg2408-2sfpatop_ehg2408-2sfp_firmwareatop_ehg2408_firmware

1 version affected across 4 products

Deep dive

Activity timeline10 mentions / 4d

Signal classification2 categories

Disclosure

990.0%

General

110.0%

Referenced assets9 URLs

By indicator

Classification over time

Date	Total	Labels

2026-03-09	7	Disclosure7
2026-03-10	1	Disclosure1
2026-03-12	1	Disclosure1
2026-03-13	1	General1

Full discourse10 posts

CRAC Learning - Tech@cracbot210d
General
CVE-2026-3823 (CVSS:9.3, HIGH) is Analyzed. EHG2408 series switch developed by Atop Technologies has a Stack-based Buffer Overflow vulnerability, allowing unauthent..https://nvd.nist.gov/vuln/detail/CVE-2026-3823 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre
Post summary
The post announces a high‑severity stack‑based buffer overflow CVE-2026‑3823 affecting Atop Technologies' EHG2408 switch but provides no evidence of exploitation, PoC, or patch information.
0000031
172 followersView on X
CRAC Learning - Tech@cracbot211d
Disclosure
CVE-2026-3823 (CVSS:9.3, HIGH) is Analyzed. EHG2408 series switch developed by Atop Technologies has a Stack-based Buffer Overflow vulnerability, allowing unauthent..https://nvd.nist.gov/vuln/detail/CVE-2026-3823 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre
Post summary
The tweet announces CVE-2026-3823, a stack-based buffer overflow rated CVSS 9.3 high, but does not provide PoC, exploit code, exploitation evidence, or patch details.
0000033
172 followersView on X
RedPacket Security@RedPacketSec213d
Disclosure
CVE Alert: CVE-2026-3823 - Atop Technologies - EHG2408 - https://www.redpacketsecurity.com/cve-alert-cve-2026-3823-atop-technologies-ehg2408/ #OSINT #ThreatIntel #CyberSecurity #cve-2026-3823 #atop-technologies #ehg2408
Post summary
The text announces a new CVE (CVE-2026-3823) alert for Atop Technologies, serving as a disclosure of the vulnerability.
0000072
3.5K followersView on X
CVE@CVEnew213d
Disclosure
CVE-2026-3823 EHG2408 series switch developed by Atop Technologies has a Stack-based Buffer Overflow vulnerability, allowing unauthenticated remote attackers to control the program's… https://www.cve.org/CVERecord?id=CVE-2026-3823
Post summary
CVE-2026-3823 discloses a stack-based buffer overflow in an EHG2408 series switch from Atop Technologies, allowing unauthenticated remote attackers to potentially take control of the device.
00000131
56.6K followersView on X
CyberDudeBivash® | Global Cybersecurity Company@cyberbivash214d
Disclosure
🚨 CYBERDUDEBIVASH SENTINEL APEX ALERT 🚨 Threat: CVE-2026-3823 - Atop Technologies｜EHG2408 series switch - Stack-based Buffer Overflow Intel Report: https://ift.tt/5kUtvbg
Post summary
Intel reports a stack-based buffer overflow vulnerability (CVE-2026-3823) affecting Atop Technologies EHG2408 series switches.
0000057
347 followersView on X
The Hacker Wire@TheHackerWire214d
Disclosure
🟠 CVE-2026-3823 - High 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 exec... https://www.thehackerwire.com/vulnerability/CVE-2026-3823/ https://t.co/nazugoFkad
Post summary
The tweet announces CVE-2026-3823, a stack‑based buffer overflow in Atop Technologies' EHG2408 switch, without any PoC, exploit, or patch details.
0000045
130 followersView on X
Vulmon Vulnerability Feed@VulmonFeeds214d
Disclosure
CVE-2026-3823 Stack-Based Buffer Overflow in Atop Technologies EHG2408 Series Switch Enables Remote Code Execution https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-3823
Post summary
The message announces CVE-2026-3823, a stack-based buffer overflow in Atop Technologies EHG2408 switches enabling remote code execution, without mentioning PoC, exploit code, patches, or active exploitation.
0000049
4.0K followersView on X
CVEFind.com@CveFindCom214d
Disclosure
[CVE-2026-3823: HIGH] Atop Technologies EHG2408 series switch faces a critical cyber threat with a Stack-based Buffer Overflow vulnerability, enabling remote attackers to take control and run malicious code.#cve,CVE-2026-3823,#cybersecurity https://cvefind.com/CVE-2026-3823
Post summary
The post announces CVE‑2026‑3823 as a stack‑based buffer overflow affecting Atop Technologies EHG2408 series switches, noting its high severity but providing no proof of exploitation, exploit code, patch, or evidence of active attacks.
0000059
600 followersView on X
VulDB 🛡@vuldb214d
Disclosure
We have just added an important vulnerability affecting Atop EHG2408 and EHG2408-2SFP (CVE-2026-3823) https://vuldb.com/?id.349790
Post summary
A new advisory has been posted for CVE‑2026‑3823, noting a vulnerability in Atop EHG2408 and EHG2408‑2SFP models.
0000085
2.1K followersView on X
0day Signal@0dayPublishing214d
Disclosure
🚨 CVE-2026-3823: Atop Technologies｜EHG2408 series ... Unauthenticated RCE on industrial switches via stack overflow - perfect pivot point for OT networks with zero user inter... https://zerodaysignal.com/vulnerability/CVE-2026-3823 #netsec #vulnerability #CVE #sysadmin #zeroday
Post summary
The tweet announces CVE-2026-3823, an unauthenticated remote code execution vulnerability in Atop Technologies EHG2408 industrial switches, with a link likely containing PoC details.
0000092
140 followersView on X

CPE platform detail4 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

4 of 4 entries

Part	Vendor	Product	Version	Target SW	Target HW
HW	blackbeartechhive	atop_ehg2408	-	-	-
HW	blackbeartechhive	atop_ehg2408-2sfp	-	-	-
OS	blackbeartechhive	atop_ehg2408-2sfp_firmware	-	-	-
OS	blackbeartechhive	atop_ehg2408_firmware	-	-	-

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Back to dashboard blackbeartechhive CVEs atop_ehg2408 vulnerabilities

What researchers are saying

CVE-2026-3823

CRAC Learning - Tech@cracbotGeneral

The post announces a high‑severity stack‑based buffer overflow CVE-2026‑3823 affecting Atop Technologies' EHG2408 switch but provides no evidence of exploitation, PoC, or patch information.

CRAC Learning - Tech@cracbotDisclosure

The tweet announces CVE-2026-3823, a stack-based buffer overflow rated CVSS 9.3 high, but does not provide PoC, exploit code, exploitation evidence, or patch details.

RedPacket Security@RedPacketSecDisclosure

The text announces a new CVE (CVE-2026-3823) alert for Atop Technologies, serving as a disclosure of the vulnerability.

CVE@CVEnewDisclosure

CVE-2026-3823 discloses a stack-based buffer overflow in an EHG2408 series switch from Atop Technologies, allowing unauthenticated remote attackers to potentially take control of the device.

CyberDudeBivash® | Global Cybersecurity Company@cyberbivashDisclosure

Intel reports a stack-based buffer overflow vulnerability (CVE-2026-3823) affecting Atop Technologies EHG2408 series switches.

The Hacker Wire@TheHackerWireDisclosure

The tweet announces CVE-2026-3823, a stack‑based buffer overflow in Atop Technologies' EHG2408 switch, without any PoC, exploit, or patch details.

Vulmon Vulnerability Feed@VulmonFeedsDisclosure

The message announces CVE-2026-3823, a stack-based buffer overflow in Atop Technologies EHG2408 switches enabling remote code execution, without mentioning PoC, exploit code, patches, or active exploitation.

CVEFind.com@CveFindComDisclosure

The post announces CVE‑2026‑3823 as a stack‑based buffer overflow affecting Atop Technologies EHG2408 series switches, noting its high severity but providing no proof of exploitation, exploit code, patch, or evidence of active attacks.