CVE-2026-22853— FreeRDP has a heap-buffer-overflow in ndr_read_uint8Array
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I. Basic Information for CVE-2026-22853
Vulnerability Information
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Vulnerability Title
FreeRDP has a heap-buffer-overflow in ndr_read_uint8Array
Source: NVD (National Vulnerability Database)
Vulnerability Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, RDPEAR’s NDR array reader does not perform bounds checking on the on‑wire element count and can write past the heap buffer allocated from hints, causing a heap buffer overflow in ndr_read_uint8Array. This vulnerability is fixed in 3.20.1.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存写
Source: NVD (National Vulnerability Database)
Vulnerability Title
FreeRDP 缓冲区错误漏洞
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 3.20.1之前版本存在缓冲区错误漏洞，该漏洞源于RDPEAR的NDR数组读取器未对在线元素计数执行边界检查，可能导致堆缓冲区溢出。
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-2026-22853
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Same Patch Batch · FreeRDP · 2026-01-14 · 9 CVEs total
| CVE-2026-22852 | FreeRDP has a heap-buffer-overflow in audin_process_formats | |
| CVE-2026-22851 | FreeRDP RDPGFX ResetGraphics race leads to use-after-free in SDL client (sdl->primary) | |
| CVE-2026-22854 | FreeRDP has a heap-buffer-overflow in drive_process_irp_read | |
| CVE-2026-22857 | FreeRDP has a heap-use-after-free in irp_thread_func | |
| CVE-2026-22855 | FreeRDP has a heap-buffer-overflow in smartcard_unpack_set_attrib_call | |
| CVE-2026-22858 | FreeRDP has a global-buffer-overflow in crypto_base64_decode | |
| CVE-2026-22856 | FreeRDP has a heap-use-after-free in create_irp_thread | |
| CVE-2026-22859 | FreeRDP has a heap-buffer-overflow in urb_select_configuration |
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
V. Comments for CVE-2026-22853
Anonymous User
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