CVE-2026-77977

Unauthenticated service disruption via unprotected administrative actions

Published Aug 27, 2026 · Updated Aug 27, 2026

Missing authentication in Ebyte NE2-D11 Firmware FW-9167-0-11 allows remote attackers to reboot or factory-reset the device. The vendor configuration utility accepts disruptive administrative commands without authenticating the requester while default credentials remain configured. Access requires adjacent-network reachability; factory reset erases configuration, while reboot interrupts service.

CVSS severity7.2
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Ebyte NE2-D11 Firmware FW-9167-0-11 allows remote attackers to reboot or factory-reset the device. The vendor configuration utility accepts disruptive administrative commands without authenticating the requester while default credentials remain configured. Access requires adjacent-network reachability; factory reset erases configuration, while reboot interrupts service.

The record

CVE
CVE-2026-77977
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
Chengdu Ebyte Electronic Technology Co., Ltd.
Product
Ebyte NE2-D11 Firmware
Classifications
CWE-306, T1529
Attack vector
adjacent
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 vectoradjacent
Required privilegesunauthenticated

What is affected?

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

Published CVSS scores

8.1CISA ICS-CERTCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
7.2CISA ICS-CERTCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1529System Shutdown/Reboot

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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