CVE-2026-110838— FreeRDP shadow before 3.32.0 Pre-Authentication Input Injection via Confirm Active bypass
一分钟漏洞结论
影响对象
FreeRDP FreeRDP
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
FreeRDP shadow server from 3.0.0 before 3.32.0 dispatches input PDUs during the Confirm Active state before authentication, allowing unauthenticated attackers to inject keyboard input. Attackers can negotiate TLS-only RDP and send an input PDU without Confirm
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一、 漏洞 CVE-2026-110838 基础信息
漏洞信息
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
FreeRDP shadow before 3.32.0 Pre-Authentication Input Injection via Confirm Active bypass
来源: CVE Program / CVE List V5
Vulnerability Description
FreeRDP shadow server from 3.0.0 before 3.32.0 dispatches input PDUs during the Confirm Active state before authentication, allowing unauthenticated attackers to inject keyboard input. Attackers can negotiate TLS-only RDP and send an input PDU without Confirm Active to inject synthetic keystrokes into the host user's X11 session via XTEST.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-110838 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
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CVE-2026-110838 其他参考 (2)
同批安全公告 · FreeRDP · 2026-10-14 · 共 11 条
| CVE-2026-110839 | 7.1 HIGH | FreeRDP 3.3.0 before 3.32.0 Heap Out-of-Bounds Write via Grayscale JPEG Clipboard Data |
| CVE-2026-110837 | 7.1 HIGH | FreeRDP 2.0.0 before 3.32.0 Heap Buffer Overflow via MP3 Audio Decoding |
| CVE-2026-110829 | 6.5 MEDIUM | FreeRDP 3.0.0 before 3.32.0 Null Pointer Dereference via rdpsnd Fragment |
| CVE-2026-110836 | 6.5 MEDIUM | FreeRDP 3.0.0 before 3.32.0 Infinite Loop DoS via Gateway Content-Type |
| CVE-2026-110834 | 6.5 MEDIUM | FreeRDP 2.0.0 before 3.32.0 Denial of Service via Serial IRP Null Handle |
| CVE-2026-110832 | 6.5 MEDIUM | FreeRDP 2.0.0 before 3.32.0 Memory Exhaustion via DRDYNVC DATA_FIRST |
| CVE-2026-110830 | 5.9 MEDIUM | FreeRDP before 3.32.0 Denial of Service via Serial IRP_MJ_CREATE |
| CVE-2026-110833 | 5.9 MEDIUM | FreeRDP before 3.32.0 Unbounded Memory Retention via RDPDR Proxy |
| CVE-2026-110831 | 4.3 MEDIUM | FreeRDP 3.13.0 before 3.32.0 Resource Leak via Drive Redirection IRP_MJ_CREATE |
| CVE-2026-110835 | 4.0 MEDIUM | FreeRDP 3.0.0 before 3.32.0 HTTP Header Injection via Proxy Routing Token |
IV. Related Vulnerabilities
Same product: FreeRDP
-
CVE-2026-110839
FreeRDP 3.3.0 before 3.32.0 Heap Out-of-Bounds Write via Gra -
CVE-2026-110837
FreeRDP 2.0.0 before 3.32.0 Heap Buffer Overflow via MP3 Aud -
CVE-2026-110836
FreeRDP 3.0.0 before 3.32.0 Infinite Loop DoS via Gateway Co -
CVE-2026-110835
FreeRDP 3.0.0 before 3.32.0 HTTP Header Injection via Proxy -
CVE-2026-110834
FreeRDP 2.0.0 before 3.32.0 Denial of Service via Serial IRP
Same vendor: FreeRDP
-
CVE-2026-110839
FreeRDP 3.3.0 before 3.32.0 Heap Out-of-Bounds Write via Gra -
CVE-2026-110837
FreeRDP 2.0.0 before 3.32.0 Heap Buffer Overflow via MP3 Aud -
CVE-2026-110836
FreeRDP 3.0.0 before 3.32.0 Infinite Loop DoS via Gateway Co -
CVE-2026-110835
FreeRDP 3.0.0 before 3.32.0 HTTP Header Injection via Proxy -
CVE-2026-110834
FreeRDP 2.0.0 before 3.32.0 Denial of Service via Serial IRP
Same weakness: CWE-306
-
CVE-2026-39997
Unauthenticated Remote Input Injection in QNAP HD Station's -
CVE-2026-34006
Pre-Authentication Multiple Critical Vulnerabilities in QNAP -
CVE-2026-76659
HPE NonStop TCP/IP UTILITIES - Denial of Service vulnerabili -
CVE-2026-76656
HPE NonStop TCP/IP UTILITIES - Denial of Service vulnerabili -
CVE-2026-104106
FileRise: 2FA disable and TOTP enrollment lack step-up re-au
V. Comments for CVE-2026-110838
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