Is CVE-2026-2944 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2026-2944, but active exploitation has not been confirmed.

Can CVE-2026-2944 be exploited remotely?

Yes. CVE-2026-2944 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-2944?

CVE-2026-2944 has a CVSS score of 9.8 (CRITICAL) and an EPSS exploitation probability of 1.28%.

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CRITICALPOC

CVE-2026-2944

CWE-77Published: February 22, 2026· Updated: Feb 26, 2026

9.8

CVSS v3.1

EPSS:1.02%probability of exploitation in 30 daysPercentile:76.9th

Official 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.

NVD Source

Technical Analysis

CVE-2026-2944 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

A proof-of-concept (PoC) exploit exists for CVE-2026-2944. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.