CVE-2022-39347— Missing path sanitation with `drive` channel in FreeRDP
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I. Basic Information for CVE-2022-39347
Vulnerability Information
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Vulnerability Title
Missing path sanitation with `drive` channel in FreeRDP
Source: NVD (National Vulnerability Database)
Vulnerability Description
FreeRDP is a free remote desktop protocol library and clients. Affected versions of FreeRDP are missing path canonicalization and base path check for `drive` channel. A malicious server can trick a FreeRDP based client to read files outside the shared directory. This issue has been addressed in version 2.9.0 and all users are advised to upgrade. Users unable to upgrade should not use the `/drive`, `/drives` or `+home-drive` redirection switch.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
FreeRDP 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeRDP是FreeRDP团队的一款开源的远程桌面协议（RDP）的实现。 FreeRDP存在路径遍历漏洞，该漏洞源于缺少对“drive”通道的路径规范化和基本路径检查。攻击者利用该漏洞可以读取共享目录之外的文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2022-39347
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- https://security.gentoo.org/glsa/202401-16vendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2022-39347
Same Patch Batch · FreeRDP · 2022-11-16 · 7 CVEs total
| CVE-2022-39320 | 5.5 MEDIUM | Heap buffer overflow in urbdrc channel |
| CVE-2022-39316 | 4.8 MEDIUM | Out of bound read in FreeRDP |
| CVE-2022-39318 | 4.8 MEDIUM | Division by zero in urbdrc channel in FreeRDP |
| CVE-2022-39317 | 4.6 MEDIUM | Out of bounds read in zgfx decoder in FreeRDP |
| CVE-2022-39319 | 4.6 MEDIUM | Missing length validation in urbdrc channel in FreeRDP |
| CVE-2022-41877 | 4.6 MEDIUM | Missing input length validation in `drive` channel in FreeRDP |
IV. Related Vulnerabilities
Same product: FreeRDP
- CVE-2026-40254
FreeRDP: contains_dotdot() off-by-one allows drive channel p - CVE-2026-33995
FreeRDP: Possible double free in kerberos_AcceptSecurityCont - CVE-2026-33987
FreeRDP: Persistent Cache bmpSize Desync - Heap OOB Write - CVE-2026-33986
FreeRDP: H.264 YUV Buffer Dimension Desync - Heap OOB Write - CVE-2026-33985
FreeRDP: ClearCodec Glyph Cache Count Desync - Heap OOB Read
Same vendor: FreeRDP
- CVE-2026-40254
FreeRDP: contains_dotdot() off-by-one allows drive channel p - CVE-2026-33995
FreeRDP: Possible double free in kerberos_AcceptSecurityCont - CVE-2026-33987
FreeRDP: Persistent Cache bmpSize Desync - Heap OOB Write - CVE-2026-33986
FreeRDP: H.264 YUV Buffer Dimension Desync - Heap OOB Write - CVE-2026-33985
FreeRDP: ClearCodec Glyph Cache Count Desync - Heap OOB Read
Same weakness: CWE-22
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npitre cramfs-tools Directory cramfsck.c do_directory path t - CVE-2022-50956
WordPress Plugin amministrazione-aperta 3.7.3 Local File Rea - CVE-2026-8215
Industrial Application Software IAS Canias ERP RMI iasReques - CVE-2026-42605
AzuraCast: Path Traversal in `currentDirectory` Parameter En - CVE-2026-42574
apko dirFS has a symlink-following path traversal that allow
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