CVE-2026-7791 Amazon CVE debrief

Who should care

Defenders responsible for Amazon WorkSpaces for Windows deployments should assess exposure and prioritize patching to prevent local privilege escalation. Security teams and vulnerability management teams should review the vulnerability details and plan for remediation.

Why it matters

CVE-2026-7791 is a high-severity vulnerability in Amazon WorkSpaces for Windows, allowing local non-admin users to escalate privileges to SYSTEM. Defenders should prioritize patching and verifying affected systems to prevent exploitation.

• Local privilege escalation to SYSTEM, allowing potential control of affected systems.
• Bypassing file system permission protections, enabling arbitrary file placement.
• Potential lateral movement within compromised systems.

Technical summary

The Skylight Workspace Config Service in Amazon WorkSpaces for Windows before 2.6.2034.0 has an improper privilege management vulnerability in its log rotation mechanism. This allows a local non-admin authenticated user to place arbitrary files into arbitrary locations, bypassing file system permission protections, and leading to local privilege escalation to SYSTEM. The vulnerability can be mitigated by verifying and applying the patch, restricting access to the log rotation mechanism, and monitoring systems for suspicious activity.

Defensive priority

Defenders should prioritize verifying and patching affected systems, as the vulnerability can lead to local privilege escalation.

Recommended defensive actions

• Verify and apply the patch (2.6.2034.0) to the Skylight Workspace Config Service in Amazon WorkSpaces for Windows.
• Restrict access to the log rotation mechanism to prevent local non-admin authenticated users from manipulating it.
• Monitor systems for suspicious activity indicating potential exploitation.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. However, the scope of affected versions and systems requires further verification. Defenders should verify and patch affected systems, as the vulnerability can lead to local privilege escalation. Evidence is limited to CVE and NVD details; further defensive verification tasks are needed.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.