CVE-2026-109249— FreeRDP 3.0.0 before 3.32.0 Heap Out-of-Bounds Read via Remote Assistance File Parsing
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 3.0.0 至 3.32.0 版本中存在一个堆缓冲区越界读取漏洞，位于 函数中。该漏洞的原因是：在解析过程中，游标向前推进但未相应减少剩余长度，导致扫描窗口可能超出解密后的 缓冲区边界。攻击者可构造恶意的 邀请文件及密码，在建立任何 RDP 连接之前，通过打开该文件导致 程序崩溃。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-109249
Vulnerability Information
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Vulnerability Title
FreeRDP 3.0.0 before 3.32.0 Heap Out-of-Bounds Read via Remote Assistance File Parsing
Source: CVE Program / CVE List V5
Vulnerability Description
FreeRDP 3.0.0 before 3.32.0 contains a heap out-of-bounds read in freerdp_assistance_parse_all_elements_of() because it advances its parsing cursor without reducing the remaining length, letting the scan window exceed the decrypted ConnectionString2 buffer. Attackers can supply a crafted .msrcIncident invitation file and password that crash xfreerdp when opened, before any RDP connection.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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-2026-109249
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Patches & Fixes for CVE-2026-109249 (1)
Vendor Advisories for CVE-2026-109249 (2)
Same Patch Batch · FreeRDP · 2026-10-12 · 18 CVEs total
| CVE-2026-109242 | 7.1 HIGH | FreeRDP before 3.0.0 and 3.6.0 before 3.32.0 Uninitialized Heap Disclosure via Progressive |
| CVE-2026-109255 | 6.8 MEDIUM | FreeRDP 3.0.0 before 3.32.0 heap buffer overflow via license_check_stream_length |
| CVE-2026-109245 | 6.8 MEDIUM | FreeRDP 3.0.0 before 3.32.0 Improper Certificate Validation in freerdp_http_request |
| CVE-2026-109244 | 6.6 MEDIUM | FreeRDP 2.0.0 before 3.32.0 Insecure Private Key Permissions in winpr-makecert |
| CVE-2026-109250 | 6.6 MEDIUM | FreeRDP 3.0.0 before 3.32.0 Heap Buffer Overflow via PKCS#11 collect_keys() |
| CVE-2026-109248 | 6.5 MEDIUM | FreeRDP 3.0.0 before 3.32.0 Heap Out-of-Bounds Read via WinPR Clipboard cFileName |
| CVE-2026-109246 | 6.5 MEDIUM | FreeRDP before 3.32.0 Shadow Server Divide-by-Zero via Frame Acknowledge PDU |
| CVE-2026-109257 | 5.9 MEDIUM | FreeRDP before 3.32.0 Double Free via NSCodec plane growth failure |
| CVE-2026-109254 | 5.9 MEDIUM | FreeRDP 2.1.0 before 3.32.0 Use-After-Free via rdpsnd Disconnect Path |
| CVE-2026-109253 | 5.3 MEDIUM | FreeRDP 3.9.0 before 3.32.0 RDPEAR NDR Scalar Out-of-Bounds Read |
| CVE-2026-109251 | 5.3 MEDIUM | FreeRDP before 3.32.0 Out-of-Bounds Write via MS-RDPEGT Video Geometry |
| CVE-2026-109252 | 5.3 MEDIUM | FreeRDP from 3.9.0 before 3.32.0 RDPEAR NULL Pointer Dereference via KERB_RPC_INTERNAL_NAM |
| CVE-2026-109256 | 5.3 MEDIUM | FreeRDP 3.10.0 through 3.32.2 Heap Buffer Overflow in WinPR PNG Conversion |
| CVE-2026-109243 | 4.4 MEDIUM | FreeRDP 3.0.0 before 3.32.0 Insecure Permissions on Soft-Smartcard Private Key File |
| CVE-2026-109240 | 3.1 LOW | FreeRDP 3.11.0 before 3.32.1 Reachable Assertion DoS via urb_isoch_transfer |
| CVE-2026-109241 | 3.1 LOW | FreeRDP before 3.32.0 NULL Dereference in Video Redirection Channel |
| CVE-2026-109247 | 3.1 LOW | FreeRDP before 3.32.0 Path Traversal via Clipboard cFileName |
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-2026-109249
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