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CVE-2026-27950— FreeRDP heap-use-after-free in update_pointer_new(SDL): Fix Applied in the Wrong File

EPSS 0.11% · P30
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I. Basic Information for CVE-2026-27950

Vulnerability Information
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Vulnerability Title
FreeRDP heap-use-after-free in update_pointer_new(SDL): Fix Applied in the Wrong File
Source: NVD (National Vulnerability Database)
Vulnerability Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the fix for the heap-use-after-free described in CVE-2026-24680 is incomplete. While the vulnerable execution flow referenced in the advisory exists in the SDL2 implementation, the fix appears to have been applied only to the SDL3 code path. In the SDL2 implementation, the pointer is not nulled after free. This creates a situation where the advisory suggests the vulnerability is fully resolved, while builds or environments still using SDL2 may retain the vulnerable logic. A complete fix is available in version 3.23.0.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放后使用
Source: NVD (National Vulnerability Database)
Vulnerability Title
FreeRDP 资源管理错误漏洞
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 3.23.0之前版本存在资源管理错误漏洞，该漏洞源于SDL2实现中指针释放后未置空，可能导致释放后重用。
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

VendorProductAffected VersionsCPESubscribe
FreeRDPFreeRDP < 3.23.0 -

II. Public POCs for CVE-2026-27950

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III. Intelligence Information for CVE-2026-27950

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Same Patch Batch · FreeRDP · 2026-02-25 · 15 CVEs total

CVE-2026-269558.8 HIGHFreeRDP has Out-of-bounds Write
CVE-2026-269658.8 HIGHFreeRDP has Out-of-bounds Write
CVE-2026-279515.3 MEDIUMFreeRDP has possible Integer overflow in Stream_EnsureCapacity
CVE-2026-259414.3 MEDIUMFreeRDP: vuln_1_15_1 RDPGFX WIRE_TO_SURFACE_2 Out-of-Bounds Read
CVE-2026-25942FreeRDP has global-buffer-overflow in xf_rail_server_execute_result
CVE-2026-25953FreeRDP has heap-use-after-free in xf_AppUpdateWindowFromSurface (freed appWindow)
CVE-2026-25952FreeRDP has heap-use-after-free in xf_SetWindowMinMaxInfo
CVE-2026-26271Buffer Overread in FreeRDP Icon Processing
CVE-2026-25959FreeRDP has heap-use-after-free in xf_cliprdr_provide_data_
CVE-2026-25997FreeRDP has heap-use-after-free in xf_clipboard_format_equal
CVE-2026-25955FreeRDP has heap-use-after-free in xf_AppUpdateWindowFromSurface (stale XImage)
CVE-2026-25954FreeRDP has heap-use-after-free in xf_rail_server_local_move_size
CVE-2026-27015FreeRDP: Smartcard NDR Alignment Padding Triggers Reachable WINPR_ASSERT Abort (Client DoS
CVE-2026-26986FreeRDP has heap-use-after-free in rail_window_free

IV. Related Vulnerabilities

Same product: FreeRDP
Same vendor: FreeRDP
Same weakness: CWE-416

V. Comments for CVE-2026-27950

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