CVE-2026-76133Network attack vector

Unauthorized access via deprecated authentication hashing

Published Aug 31, 2026 · Updated Sep 1, 2026

Use of risky cryptography in Ebyte NA111-M Firmware 9013-2-17 allows remote attackers to gain unauthorized device access. An authentication-related operation uses a deprecated hashing algorithm, weakening assurance when the exchange can be manipulated or predicted. No specific algorithm, code locus, or required exchange manipulation has been published, so the precise access path remains undisclosed.

CVSS severity9.8
Critical
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of risky cryptography in Ebyte NA111-M Firmware 9013-2-17 allows remote attackers to gain unauthorized device access. An authentication-related operation uses a deprecated hashing algorithm, weakening assurance when the exchange can be manipulated or predicted. No specific algorithm, code locus, or required exchange manipulation has been published, so the precise access path remains undisclosed.

The record

CVE
CVE-2026-76133
Published
Aug 31, 2026
Updated
Sep 1, 2026
Vendor
Chengdu Ebyte Electronic Technology Co., Ltd.
Product
Ebyte NA111-M Firmware
Classifications
CWE-327, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 1, 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=9013-2-17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Chengdu Ebyte Electronic Technology Co., Ltd. · Ebyte NA111-M Firmwareversion=9013-2-17

Published CVSS scores

9.8CISA ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3CISA ICS-CERTCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-327Use of a Broken or Risky Cryptographic Algorithm
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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