MSP Threat Radar Weekly Briefing — Week of 2026-07-13

This week’s briefing tracks 12 recent watch items across 6 vendors, with emphasis on active service incidents and high-priority operational issues.

Top items

Fortinet FortiSandbox OS Command Injection Vulnerability

• Vendor: Fortinet
• Published: 2026-07-16
• Status: active
• Source: cisa-kev
• Official advisory: https://fortiguard.fortinet.com/psirt/FG-IR-26-100

Fortinet FortiSandbox contains an OS command injection vulnerability that could allow an unauthenticated attacker to execute unauthorized code or commands via crafted HTTP requests.

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. Due date: 2026-07-19.

Fortinet FortiSandbox OS Command Injection Vulnerability

• Vendor: Fortinet
• Published: 2026-07-16
• Status: active
• Source: cisa-kev
• Official advisory: https://fortiguard.fortinet.com/psirt/FG-IR-26-141

Fortinet FortiSandbox, FortiSandbox Cloud, and FortiSandbox PaaS contain an OS command injection vulnerability that allows an unauthenticated attacker to execute unauthorized commands via specifically crafted HTTP requests.

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. Due date: 2026-07-19.

sma6210 firmware vulnerability (CVE-2026-15409)

• Vendor: SonicWall
• Published: 2026-07-14
• Status: active
• Source: nvd
• Official advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-15409

A Server-side request forgery (SSRF) vulnerability has been identified in the SMA1000 Appliance Work Place interface. A remote unauthenticated attacker could potentially cause the appliance to make requests to unintended location.

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. Review affected assets, prioritize patch validation, and map remediation against managed client inventory.

sharepoint server vulnerability (CVE-2026-58644)

• Vendor: Microsoft
• Published: 2026-07-14
• Status: active
• Source: nvd
• Official advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-58644

Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. Review affected assets, prioritize patch validation, and map remediation against managed client inventory.

sharepoint server vulnerability (CVE-2026-56164)

• Vendor: Microsoft
• Published: 2026-07-14
• Status: active
• Source: nvd
• Official advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-56164

Missing authentication for critical function in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges over a network.

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. Review affected assets, prioritize patch validation, and map remediation against managed client inventory.