2026年9月23日の
セキュリティ情報

Subject: [Security Advisory] MongoDB Vulnerabilities (CVE-2026-93762, CVE-2026-93393)

Dear Team,

This is a notification regarding security updates for MongoDB.

■ Overview
MongoDB has patched 14 vulnerabilities. Two of these are critical (CVSS v4.0: 9.2), potentially allowing unauthorized data deletion/access or memory corruption.

■ Affected Components
- Mongoid
- MongoDB C Driver (specifically Windows platform)
- Entity Framework Core Provider

■ Remediation Steps
1. Identify the versions of MongoDB components currently in use.
2. Upgrade to the following patched versions:
- Mongoid: 7.6.2, 8.0.13, 8.1.13, 9.0.12, 9.1.1 or later
- Windows C Driver: 1.30.11, 2.5.4 or later

■ Reference
- MongoDB Official Security Advisory

Priority: High
Deadline: Immediate

Subject: [Urgent] Check Point Security Management Server and Spark VPN Vulnerability Remediation

Dear IT/Security Team,

We are sharing critical vulnerability information regarding Check Point products.

■ Overview
A zero-day path traversal vulnerability (CVE-2026-93616) in the Security Management Server allows unauthenticated script execution and has been exploited in targeted attacks. It has a critical CVSS score of 9.8. Additionally, exploitation attempts have been observed for a VPN flaw (CVE-2026-85102) affecting the Spark firewall line.

■ Scope
- Check Point Security Management Server
- Check Point Spark (Small Business Firewalls)

■ Remediation Steps
1. Immediately apply the latest security fix for the Security Management Server released on September 22.
2. For Spark products, verify that the VPN vulnerability fix released on September 9 has been applied.

■ Reference
- Check Point Official Advisory

Priority: High
Deadline: Immediate

Subject: [Urgent] F5 BIG-IP APM CVE-2026-94127 Remediation

Dear Team,

We are sharing critical information regarding a zero-day vulnerability in F5 BIG-IP APM.

■ Overview
A critical RCE vulnerability (CVE-2026-94127) has been identified in F5 BIG-IP APM. This heap-based buffer overflow is being actively exploited in the wild, as warned by CISA and F5.

■ Scope
- Product: F5 BIG-IP Access Policy Manager (APM)
- Condition: Systems configured as OAuth Authorization Servers with an access policy and OAuth profile on the same virtual server.

■ Action Plan
1. Verify the configuration and version of BIG-IP APM in our environment.
2. Apply the latest security patches provided by F5 immediately.

■ Reference
- F5 Official Security Advisory
- CISA Alert

Priority: High
Deadline: Immediate

Subject: [Alert] Vulnerabilities in Zyxel and Check Point Products (CVE-2026-7273, CVE-2026-93616)

Dear Team,

CISA has reported active exploitation of vulnerabilities in network-related products. Please review the following details.

■ Overview
Critical vulnerabilities in Zyxel switches and Check Point management products allow unauthenticated OS command execution and code execution.

■ Affected Scope
- Zyxel GS1900 Series (CVE-2026-7273)
- Check Point Security Management Server and Log Management products (CVE-2026-93616)

■ Action Plan
1. Identify if the affected products and versions are deployed in our environment.
2. Apply the latest security patches provided by the vendors immediately.

■ Reference
- CISA Known Exploited Vulnerabilities (KEV) Catalog

Priority: High
Deadline: Immediate

Subject: [Security Advisory] Ubuntu Linux Container Escape Vulnerability (CVE-2026-80521)

Dear IT/Security Team,

We are sharing information regarding a critical vulnerability in Ubuntu Linux.

■ Overview
A use-after-free vulnerability in the Linux kernel's AF_UNIX socket subsystem (CVE-2026-80521, CVSS 7.8) has been identified. This flaw enables an attacker to escape a container and gain root privileges on the host system. Exploit code has already been released by DepthFirst.

■ Affected Scope
- Ubuntu 26.04, 24.04, 22.04 LTS
- Ubuntu-based workloads on AWS, Azure, and GCP

■ Action Plan
1. Audit your environment to identify affected Ubuntu versions and kernel packages.
2. Monitor the Ubuntu Security Tracker and apply patches immediately upon release (currently listed as "work in progress").
3. As a mitigation, restrict the use of privileged containers to minimize the attack surface.

■ Reference
- Ubuntu Security Tracker

Priority: High
Deadline: Immediately upon patch availability