Critical severity · published Feb 22, 2026
CVE-2026-2944
Tosei Online Store Management System ネット店舗管理システム HTTP POST Request monitor.php system os command injection
9.8
CVSS
6.9%
EPSS
No
On KEV
Description
A security flaw has been discovered in Tosei Online Store Management System ネット店舗管理システム 1.01. Affected is the function system of the file /cgi-bin/monitor.php of the component HTTP POST Request Handler. Performing a manipulation of the argument DevId results in os command injection. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)6.9% · higher than 94% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OS
Online Store Management System ネット店舗管理システム · Tosei
1.01 · source: vendor
OS
Online Store Management System · Tosei-corporation
1.01 · source: NVD
Affected product
OS
Online Store Management System ネット店舗管理システム
Tosei
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2944
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2944
Exploit
https://github.com/CVE-Hunter-Leo/CVE/issues/9
Permissions Required
https://vuldb.com/?ctiid.347314
Third Party Advisory
https://vuldb.com/?id.347314
Third Party Advisory
https://vuldb.com/?submit.754579
More from Online Store Management System ネット店舗管理システム
9.8
CVE-2024-7898
Tosei Online Store Management System ネット店舗管理システム Backend default credentials
8.8
CVE-2024-7897
Tosei Online Store Management System ネット店舗管理システム tosei_kikai.php command injection
8.8
CVE-2024-7896
Tosei Online Store Management System ネット店舗管理システム p1_ftpserver.php command injection
7.5
CVE-2024-43022
An issue in the downloader.php component of TOSEI online store management system v4.02, v4.03, and v4.04 allows attackers to execute a directory traversal
7.3
CVE-2026-1192
Tosei Online Store Management System ネット店舗管理システム imode_alldata.php command injection