CVE-2026-2533Public exploitNetwork attack vector

Unauthenticated command execution via adr_txt_1 injection

Published Feb 16, 2026 · Updated Feb 16, 2026

Command injection in /cgi-bin/tosei_datasend.php in TOSEI Self-service Washing Machine 4.02 allows remote attackers to execute commands. The CGI handler incorporates the adr_txt_1 parameter into command processing without neutralizing command-control characters. No authentication or user interaction is required, and successful exploitation executes attacker-supplied commands through the network-reachable appliance endpoint.

CVSS severity7.3
High
EPSS probability2.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in /cgi-bin/tosei_datasend.php in TOSEI Self-service Washing Machine 4.02 allows remote attackers to execute commands. The CGI handler incorporates the adr_txt_1 parameter into command processing without neutralizing command-control characters. No authentication or user interaction is required, and successful exploitation executes attacker-supplied commands through the network-reachable appliance endpoint.

The record

CVE
CVE-2026-2533
Published
Feb 16, 2026
Updated
Feb 16, 2026
Vendor
TOSEI Corporation
Product
TOSEI Self-service Washing Machine
Classifications
CWE-77, CWE-74, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 16, 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=4.02

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TOSEI Corporation · TOSEI Self-service Washing Machineversion=4.02

Published CVSS scores

7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

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 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 exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059Command and Scripting Interpreter

Public exploit references

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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