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CVE-2026-91950 Details
Description
FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the rdpdr_dump_packet function due to 32-bit unsigned integer wraparound in buffer bounds validation. A malicious RDP server can send a crafted RDPDR packet with computerNameLen set to 0xFFFFFFF0 to bypass bounds checks and trigger memory reads past the packet buffer, causing client crashes or heap disclosure in logs.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Sep 15, 2026Exploitation: PocAutomatable: NoTechnical Impact: Partial
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-c5gr-hmqp-pwj4 | CISA-ADP | ExploitMitigationVendor Advisory |
| https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-c5gr-hmqp-pwj4 | [email protected] | ExploitMitigationVendor Advisory |
| https://www.vulncheck.com/advisories/freerdp-before-3.31.0-out-of-bounds-read-via-uint32-wraparound | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-125 | Out-of-bounds Read | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| freerdp freerdp | < 3.31.0 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 24, 2026 | Initial Analysis | [email protected] |
| Sep 15, 2026 | New CVE Received | [email protected] |
| Sep 15, 2026 | CVE Modified | CISA-ADP |