CVE-2026-111376 FreeRDP CVE debrief

Who should care

System administrators and security teams using FreeRDP, especially those managing Windows clients and RDP connections, should assess exposure and prioritize remediation to prevent potential client crashes or stream size corruption. This includes reviewing and updating affected FreeRDP installations to version 3.32.0 or later, monitoring for suspicious RDP activity, and verifying the integrity of clipboard handling in their environments.

Why it matters

CVE-2026-111376 is a low-severity vulnerability in FreeRDP that could lead to client crashes or stream corruption. System administrators and security teams using FreeRDP should assess exposure and prioritize remediation to prevent potential issues.

• Potential client crashes due to invalid memory reads
• Possible stream size corruption
• Requires verification of affected versions and exposure
• Remediation priority for FreeRDP installations

Technical summary

FreeRDP from 3.30.0 before 3.32.0 contains a heap out-of-bounds read vulnerability in the Windows client's CliprdrStream_New function. Malicious RDP servers can trigger invalid memory reads via short clipboard responses, potentially crashing clients or corrupting stream sizes. The vulnerability has a CVSS score of 2.3 and is considered low-severity. The vulnerability affects the clipboard handling in the Windows client. FreeRDP versions from 3.30.0 before 3.32.0 are vulnerable to this issue. System administrators and security teams should review and remediate this vulnerability to prevent potential client crashes or stream size corruption.

Defensive priority

Remediate vulnerable FreeRDP installations

Recommended defensive actions

• Assess exposure of FreeRDP installations
• Remediate vulnerable FreeRDP installations to version 3.32.0 or later
• Monitor for suspicious RDP activity
• 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. Vendor information is limited, with a low confidence level. The vulnerability was disclosed on October 16, 2026, and has not been modified since then. The CVE Program and NVD provide official records and details on the vulnerability. Additional source references are available for further information.

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.