CVE-2020-11047— Out-of-bounds Read in FreeRDP
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I. Basic Information for CVE-2020-11047
Vulnerability Information
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Vulnerability Title
Out-of-bounds Read in FreeRDP
Source: NVD (National Vulnerability Database)
Vulnerability Description
In FreeRDP after 1.1 and before 2.0.0, there is an out-of-bounds read in autodetect_recv_bandwidth_measure_results. A malicious server can extract up to 8 bytes of client memory with a manipulated message by providing a short input and reading the measurement result data. This has been patched in 2.0.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
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 1.1之后版本（2.0.0版本已修复）中的autodetect_recv_bandwidth_measure_results存在缓冲区错误漏洞。攻击者可通过提供简短的输入并读取测量结果数据利用该漏洞获取客户端内存。
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-2020-11047
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Same Patch Batch · FreeRDP · 2020-05-07 · 7 CVEs total
| CVE-2020-11042 | 5.5 MEDIUM | Out-of-bounds Read in FreeRDP |
| CVE-2020-11046 | 5.5 MEDIUM | Improper Restriction of Operations within the Bounds of a Memory Buffer in FreeRDP |
| CVE-2020-11049 | 5.5 MEDIUM | Out-of-bounds Read in FreeRDPrdp_read_share_control_header |
| CVE-2020-11044 | 2.2 LOW | Double Free in FreeRDP |
| CVE-2020-11045 | 2.2 LOW | Out-of-bounds Read in FreeRDP |
| CVE-2020-11048 | 2.2 LOW | Out-of-bounds Read in FreeRDPrdp_read_flow_control_pdu |
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-2020-11047
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