CVE-2026-73809Network attack vector

Management access via cleartext authentication and session data

Published Aug 27, 2026 · Updated Aug 27, 2026

Cleartext transmission in Ebyte NE2-D11 Firmware FW-9167-0-11 allows attackers to intercept authentication and session data. The web management interface exchanges sensitive communications without transport-layer encryption, exposing authentication or session information to network capture. Attackers must be able to observe traffic between a user and the device; captured material enables unauthorized management access.

CVSS severity7.5
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext transmission in Ebyte NE2-D11 Firmware FW-9167-0-11 allows attackers to intercept authentication and session data. The web management interface exchanges sensitive communications without transport-layer encryption, exposing authentication or session information to network capture. Attackers must be able to observe traffic between a user and the device; captured material enables unauthorized management access.

The record

CVE
CVE-2026-73809
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
Chengdu Ebyte Electronic Technology Co., Ltd.
Product
Ebyte NE2-D11 Firmware
Classifications
CWE-319, T1040
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=FW-9167-0-11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Chengdu Ebyte Electronic Technology Co., Ltd. · Ebyte NE2-D11 Firmwareversion=FW-9167-0-11

Published CVSS scores

8.7CISA ICS-CERTCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5CISA ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
T1040Network Sniffing

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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