MSP Threat Radar Weekly Briefing — Week of 2026-05-04

This week’s briefing tracks 12 recent watch items across 4 vendors, with emphasis on active service incidents and high-priority operational issues.

Top items

litellm vulnerability (CVE-2026-42208)

• Vendor: Litellm
• Published: 2026-05-08
• Status: active
• Source: nvd
• Official advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-42208

LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. From version 1.81.16 to before version 1.83.7, a database query used during proxy API key checks mixed the caller-supplied key value into the query text instead of passing it as a separate parameter. An unauthenticated attacker could send a specially crafted Authorization header to any LLM API route (for example POST /chat/completions) and reach this query through the proxy's error-handling path. An attacker could read data from the proxy's database and may be able to modify it, leading to unauthorised access to the proxy and the credentials it manages. This issue has been patched in version 1.83.7.

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Review affected assets, prioritize patch validation, and map remediation against managed client inventory.

endpoint manager mobile vulnerability (CVE-2026-6973)

• Vendor: Ivanti
• Published: 2026-05-07
• Status: active
• Source: nvd
• Official advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-6973

An Improper Input Validation in Ivanti EPMM before versions 12.6.1.1, 12.7.0.1, and 12.8.0.1 allows a remotely authenticated user with administrative access to achieve remote code execution.

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Review affected assets, prioritize patch validation, and map remediation against managed client inventory.

pan-os vulnerability (CVE-2026-0300)

• Vendor: Palo Alto Networks
• Published: 2026-05-06
• Status: active
• Source: nvd
• Official advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-0300

A buffer overflow vulnerability in the User-ID™ Authentication Portal (aka Captive Portal) service of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets. The risk of this issue is greatly reduced if you secure access to the User-ID™ Authentication Portal per the best practice guidelines https://knowledgebase.paloaltonetworks.com/KCSArticleDetail by restricting access to only trusted internal IP addresses. Prisma Access, Cloud NGFW and Panorama appliances are not impacted by this vulnerability.

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Until the vendor releases an official fix, the following workaround should be implemented: - Restrict User-ID Authentication Portal access to only trusted zones. - Disable User-ID Authentication Portal if not required. Review affected assets, prioritize patch validation, and map remediation against managed client inventory.

Microsoft advisory CVE-2026-37457

• Vendor: Microsoft
• Published: 2026-05-05
• Status: active
• Source: msrc
• Official advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-37457

Information published. Information published. Information published.

Customer action is required. Review the Security Update Guide entry, confirm affected Microsoft products, and prioritize patch validation or mitigation.

Microsoft Enterprise Security Token Service (ESTS) Spoofing Vulnerability (CVE-2026-40379)

• Vendor: Microsoft
• Published: 2026-05-07
• Status: watch
• Source: msrc
• Official advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40379

Information published.

Review the official advisory, map affected products against managed client environments, and determine whether patching or temporary mitigation is required.