Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV N L N N N N N H 8.7 .0038 31.4 —
AFFECTED Product Versions Fixed FreeRDP unspecified 3.29.0
TIMELINE Jul 29 Reserved by VulnCheck Aug 1 Published (CNA: VulnCheck) Aug 2 EXPLOIT PUBLISHED — CVE-2026-67298 (FreeRDP). Public exploit reference added.
FreeRDP versions 3.28.0 and earlier contain a heap buffer overflow in the server-side RAIL channel handler (rail_server_handle_messages() in channels/rail/server/rail_main.c). When processing a RAIL PDU header, the code subtracts RAIL_PDU_HEADER_LENGTH from the peer-controlled orderLength field without first verifying orderLength is at least the header length. For orderLength values 0..3 this causes an unsigned integer underflow to a very large size, which bypasses the Stream_EnsureRemainingCapacity() capacity check (due to pointer arithmetic wraparound) and is then passed to WTSVirtualChannelRead(), resulting in an out-of-bounds heap write. A malicious or compromised RDP client can exploit this to corrupt the heap and crash the server. Fixed in FreeRDP 3.29.0.
| Date | Event | Detail |
|---|---|---|
| July 29, 2026 | Reserved | Reserved by VulnCheck |
| August 1, 2026 | Published | Published (CNA: VulnCheck) |
| August 2, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-67298 (FreeRDP). Public exploit reference added. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| FreeRDP | FreeRDP | — | — | 3.29.0 |
Authoritative record: CVE-2026-67298 at cve.org
Vendors: freerdp
Weaknesses: CWE-191
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-67298 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.