2026年8月31日の
セキュリティ情報

Subject: [Security Alert] Beware of Fake CAPTCHA Verification Prompts

Dear employees,
We have observed a new type of attack where fake Cloudflare CAPTCHA screens prompt users to copy and execute commands in Windows Terminal or PowerShell to "verify" their identity.

What you need to do:
1. NEVER copy and paste any commands into your terminal or PowerShell when prompted by a website.
2. If you have already followed such instructions, please disconnect your device from the network and contact the IT security team immediately.

Deadline: Immediate

Subject: [Security Advisory] CubeCart CVE-2026-54647 Mitigation

Dear IT Administration Team,

We are sharing information regarding a vulnerability in CubeCart.

■ Overview
An authenticated administrative SQL injection vulnerability (CVE-2026-54647) has been identified in CubeCart 6.7.4. Due to insufficient validation of the `download_expire` parameter in the admin panel, an attacker with administrative access can execute arbitrary SQL queries.

■ Scope
- Product: CubeCart
- Affected Version: 6.7.4

■ Mitigation Steps
1. Verify the current version of your CubeCart installation.
2. Update to version 6.7.5 or later to resolve the vulnerability.

■ Reference
- GitHub Advisory: https://github.com/cubecart/v6/security/advisories/GHSA-hvmw-v8gc-4c29

Priority: High
Deadline: Immediate

Subject: [Security Alert] Privilege Escalation Exploit 'HardBreacher' for Kaspersky Endpoint Security

Dear IT/Security Team,

We are sharing information regarding a newly released exploit targeting Kaspersky products.

■ Overview
A researcher known as Nightmare Eclipse has released a Proof-of-Concept (PoC) exploit dubbed 'HardBreacher.' This exploit targets a privilege escalation vulnerability in Kaspersky Endpoint Security, allowing an attacker to control the UI process and potentially compromise the entire operating system's stability and file access controls.

■ Scope
- Kaspersky Endpoint Security

■ Action Plan
1. Verify the current version of Kaspersky Endpoint Security across all endpoints.
2. Ensure that the latest security patches and product updates are applied immediately.

■ Reference
- SecurityWeek: Nightmare Eclipse Drops ‘HardBreacher’ Kaspersky Product Exploit

Priority: High
Deadline: Immediate

Subject: [Security Advisory] Langflow Vulnerabilities (CVE-2026-19286 et al.)

Dear Team,

We are sharing critical vulnerability information regarding Langflow.

■ Overview
Three critical vulnerabilities (CVE-2026-19286, CVE-2026-19295, CVE-2026-18729) have been discovered in Langflow that could allow arbitrary code execution. These include risks of unauthenticated RCE and privilege escalation.

■ Scope
- Affected Product: Langflow (Server)

■ Action Plan
1. Verify if Langflow is deployed within our environment.
2. If deployed, immediately update to the latest patched version.

■ Reference
- IBM Security Advisory

Priority: High
Deadline: Immediate

Subject: [Urgent] PaperCut Vulnerabilities (CVE-2026-82078, CVE-2026-81578) Mitigation

Dear IT/Security Team,

This is an alert regarding critical vulnerabilities identified in PaperCut MF and NG.

■ Overview
Multiple vulnerabilities have been discovered that allow for security restriction bypass and Remote Code Execution (RCE). CVE-2026-82078 and CVE-2026-81578 are currently being exploited in the wild, posing a severe risk to affected systems.

■ Scope
- Affected Products: All versions of PaperCut MF and PaperCut NG

■ Mitigation Steps
1. Visit the official vendor website to identify the latest security patches.
2. Apply the necessary updates to all vulnerable PaperCut server instances immediately.

■ Reference
- Official Vendor Advisory

Priority: High
Deadline: Immediate