CVE-2026-109950— FreeRDP 3.0.0 before 3.32.0 Heap Out-of-Bounds Read via RD Gateway Messages
Quick assessment
Affected
FreeRDP FreeRDP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
FreeRDP 从版本 3.0.0 到 3.32.0（不含）存在一个堆缓冲区越界读取漏洞，允许恶意的 RD Gateway 通过发送不匹配的消息长度导致客户端崩溃。攻击者如果控制了网关，可以将 MsgBytes 设置为远大于 consent 或 service 消息中 NDR 字符串的 ActualCount 的值，从而导致 UTF-8 转换时读取超出流分配的区域，破坏客户端的可用性。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-109950
Vulnerability Information
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Vulnerability Title
FreeRDP 3.0.0 before 3.32.0 Heap Out-of-Bounds Read via RD Gateway Messages
Source: CVE Program / CVE List V5
Vulnerability Description
FreeRDP from 3.0.0 before 3.32.0 contains a heap out-of-bounds read vulnerability that allows a malicious RD Gateway to crash clients by sending mismatched message lengths. Attackers controlling the gateway can set MsgBytes far larger than the NDR string ActualCount in consent or service messages, causing UTF-8 conversion to read past the stream allocation and disrupt client availability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-109950
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-109950 (2)
Same Patch Batch · FreeRDP · 2026-10-13 · 21 CVEs total
| CVE-2026-109676 | 8.8 HIGH | FreeRDP 3.0.0-beta1 before 3.32.0 Use-After-Free via Smartcard Connect |
| CVE-2026-109678 | 6.5 MEDIUM | FreeRDP 3.0.0-beta1 before 3.32.0 Reachable Assertion via Emulated SCardStatusA |
| CVE-2026-109677 | 6.5 MEDIUM | FreeRDP 2.0.0-beta1 before 3.28.0 Out-of-Bounds Read via LocateCardsByATRA Handler |
| CVE-2026-109942 | 6.5 MEDIUM | FreeRDP 2.3.0 before 3.32.0 NULL Pointer Dereference via RD Gateway Close Channel Packet |
| CVE-2026-109941 | 6.5 MEDIUM | FreeRDP 2.3.0 before 3.32.0 Infinite Loop via RD Gateway Chunked Response |
| CVE-2026-109938 | 6.5 MEDIUM | FreeRDP 3.11.0 before 3.32.0 Integer Overflow via Mapped Video Geometry Update |
| CVE-2026-109946 | 6.5 MEDIUM | FreeRDP 3.11.0 before 3.32.0 Reachable Assertion via AVC444 Odd Region Width |
| CVE-2026-109944 | 6.5 MEDIUM | FreeRDP 3.0.0 before 3.32.0 Reachable Assertion via Stale Smartcard Handle |
| CVE-2026-109939 | 6.5 MEDIUM | FreeRDP 3.27.1 before 3.32.0 NULL Pointer Dereference via Cache Bitmap V3 Order |
| CVE-2026-109943 | 6.5 MEDIUM | FreeRDP 3.29.0 before 3.32.0 Double Free via Async-Update Polygon Order |
| CVE-2026-109947 | 6.5 MEDIUM | FreeRDP 3.20.1 before 3.32.0 Unbounded Allocation via drive_process_irp_read |
| CVE-2026-109949 | 6.5 MEDIUM | FreeRDP 3.0.0 before 3.32.0 PIN Brute-Force via Virtual Smartcard |
| CVE-2026-109953 | 5.3 MEDIUM | FreeRDP 3.0.0 before 3.32.0 Cleartext Credential Disclosure via /restricted-admin |
| CVE-2026-109952 | 5.3 MEDIUM | FreeRDP 3.0.0 before 3.32.0 Security Protocol Downgrade via Negotiation Response |
| CVE-2026-109680 | 5.3 MEDIUM | FreeRDP 3.18.0 before 3.32.0 Heap Out-of-Bounds Write via ARM Redirected Username |
| CVE-2026-109945 | 5.3 MEDIUM | FreeRDP 3.0.0 before 3.32.0 Smartcard Use-After-Free via Concurrent Disconnect and Transmi |
| CVE-2026-109679 | 5.3 MEDIUM | FreeRDP 3.0.0-beta4 before 3.32.0 NULL Pointer Crash via ARM Response |
| CVE-2026-109951 | 5.3 MEDIUM | FreeRDP 3.17.1 before 3.32.0 Heap Buffer Over-Read via Proxy DRDYNVC Channel Name |
| CVE-2026-109940 | 4.3 MEDIUM | FreeRDP 3.0.0-beta1 before 3.32.0 Stack Buffer Overflow via PKCS#11 Key Name |
| CVE-2026-109948 | 4.3 MEDIUM | FreeRDP 3.0.0 before 3.32.0 Memory Disclosure via SCardTransmit Smartcard Redirection |
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-2026-110838
FreeRDP shadow before 3.32.0 Pre-Authentication Input Inject -
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
Same vendor: FreeRDP
-
CVE-2026-110839
FreeRDP 3.3.0 before 3.32.0 Heap Out-of-Bounds Write via Gra -
CVE-2026-110838
FreeRDP shadow before 3.32.0 Pre-Authentication Input Inject -
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
Same weakness: CWE-125
-
CVE-2026-76667
HPE NonStop EXPAND - Out-of-Bounds memory read vulnerability -
CVE-2026-76666
HPE NonStop EXPAND - Out-of-Bounds memory read -
CVE-2026-76665
HPE NonStop EXPAND - Buffer Overflow vulnerability -
CVE-2026-76664
HPE NonStop EXPAND - Out-of-Bounds memory read/write -
CVE-2026-110810
ggml-org whisper.cpp Model Loader whisper_model_load out-of-
V. Comments for CVE-2026-109950
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