CVE-2026-22855— FreeRDP has a heap-buffer-overflow in smartcard_unpack_set_attrib_call
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I. Basic Information for CVE-2026-22855
Vulnerability Information
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Vulnerability Title
FreeRDP has a heap-buffer-overflow in smartcard_unpack_set_attrib_call
Source: NVD (National Vulnerability Database)
Vulnerability Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap out-of-bounds read occurs in the smartcard SetAttrib path when cbAttrLen does not match the actual NDR buffer length. This vulnerability is fixed in 3.20.1.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
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，该漏洞源于智能卡SetAttrib路径中，当cbAttrLen与实际NDR缓冲区长度不匹配时发生堆越界读取。
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-2026-22855
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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-2026-22853 | FreeRDP has a heap-buffer-overflow in ndr_read_uint8Array | |
| 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-2026-22858 | 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
Same weakness: CWE-125
- CVE-2026-8177
XML::LibXML versions through 2.0210 for Perl read out-of-bou - CVE-2026-6104
Global buffer over-read in mb_convert_encoding() with attack - CVE-2026-7258
Out-of-bounds read in urldecode() on NetBSD - CVE-2026-8186
Open5GS NF client.c ogs_sbi_client_send_via_scp_or_sepp out- - CVE-2026-3508
ASUS System Control Interface 缓冲区错误漏洞
V. Comments for CVE-2026-22855
Anonymous User
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