CVE-2026-80254Network attack vector

Cross-user password changes via user-controlled account key

Published Sep 3, 2026 · Updated Sep 3, 2026

Authorization bypass in Shizen Connect Shizen Box 2 edge-app 3.1.15 and earlier allows remote authenticated users to change other users' passwords. The password-change operation trusts a user-controlled account key instead of enforcing authorization for the target account. Exploitation requires a valid login, an intentionally disabled firewall, and same-LAN access, and permits takeover of the targeted account.

CVSS severity7.1
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Shizen Connect Shizen Box 2 edge-app 3.1.15 and earlier allows remote authenticated users to change other users' passwords. The password-change operation trusts a user-controlled account key instead of enforcing authorization for the target account. Exploitation requires a valid login, an intentionally disabled firewall, and same-LAN access, and permits takeover of the targeted account.

The record

CVE
CVE-2026-80254
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
Shizen Connect
Product
Shizen Box 2 edge-app
Classifications
CWE-639, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 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=0 <=v3.1.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shizen Connect · Shizen Box 2 edge-appversion=0 <=v3.1.15

Published CVSS scores

6.5JPCERT/CC and IPACVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
7.1JPCERT/CC and IPACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1098Account Manipulation

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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