CVE-2026-67298
- Source
- https://cve.org/CVERecord?id=CVE-2026-67298
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-67298.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-67298
- Downstream
ALSA (1)
DEBIAN (1)
RLSA (1)
UBUNTU (1)
- Related
- Published
- 2026-08-01T12:22:18Z
- Modified
- 2026-10-28T02:31:08Z
- Severity
-
- 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- FreeRDP 3.28.0 Heap Buffer Overflow via RAIL orderLength Underflow
- Details
-
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.
- Database specific
{ "cna_assigner": "VulnCheck", "cwe_ids": [ "CWE-191" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67298.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67298.json
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-qmvw-52ph-q5pv
- https://nvd.nist.gov/vuln/detail/CVE-2026-67298
- https://www.vulncheck.com/advisories/freerdp-heap-buffer-overflow-via-rail-orderlength-underflow
- https://github.com/FreeRDP/FreeRDP/commit/46848765f2a1134f8652f8760eefb5e85d64a9b8
- https://github.com/FreeRDP/FreeRDP/commit/5370fb26fbf034ecd11d3026b6ad639b5fff493f
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-5wr6-8m8j-3h7f
Affected packages
Git / github.com/freerdp/freerdp
Affected ranges
- Type
- GIT
- Repo
- https://github.com/freerdp/freerdp
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "fixed": "3.29.0" } ], "source": "AFFECTED_FIELD", "strategy": "StandardRange" }, { "range": [ { "fixed": "5370fb26fbf034ecd11d3026b6ad639b5fff493f" } ], "source": "REFERENCES_COMMIT" }, { "range": [ { "fixed": "46848765f2a1134f8652f8760eefb5e85d64a9b8" } ], "source": "REFERENCES_COMMIT" } ] }