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CVE-2026-111382— FreeRDP before 3.32.0 Heap Out-of-Bounds Write in AVC444 YUV444 Combine

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 3.32.0 之前的版本在 general_LumaToYUV444 和 general_ChromaV2ToYUV444 函数中存在客户端堆越界写入漏洞，允许恶意的 RDP 服务器破坏客户端内存。攻击者可以发送具有奇数高度且结束位置恰好为表面高度的区域矩形（region rects）的 RDPGFX AVC444 或 AVC444v2 帧，从而向 U/V 平面之外写入数据，导致堆腐败，并可能实现代码执行。

CVSS 8.8 · High EPSS 0.29% · P20

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
FreeRDP FreeRDP < 3.32.0 affected
3.32.0 unaffected
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I. Basic Information for CVE-2026-111382

Vulnerability Information
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Vulnerability Title
FreeRDP before 3.32.0 Heap Out-of-Bounds Write in AVC444 YUV444 Combine
Source: CVE Program / CVE List V5
Vulnerability Description
FreeRDP before 3.32.0 contains a client-side heap out-of-bounds write vulnerability in general_LumaToYUV444 and general_ChromaV2ToYUV444 that allows malicious RDP servers to corrupt client memory. Attackers can send RDPGFX AVC444 or AVC444v2 frames with odd-height region rects ending at surface height to write past U/V planes, enabling heap corruption and potential code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
FreeRDP FreeRDP 0 ~ 3.32.0 -

II. Public POCs for CVE-2026-111382

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-111382

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Vendor Advisories for CVE-2026-111382 (2)

Same Patch Batch · FreeRDP · 2026-10-16 · 10 CVEs total

CVE-2026-111380 8.8 HIGH FreeRDP 3.29.0 before 3.32.0 Heap Overflow via audin Apple Backends
CVE-2026-111378 7.5 HIGH FreeRDP 3.0.0 before 3.32.0 Unauthenticated Memory Exhaustion via NLA Frame Parser
CVE-2026-111381 7.3 HIGH FreeRDP before 3.32.0 Heap Buffer Overflow via Persistent Cache v2 Parser
CVE-2026-111379 7.3 HIGH FreeRDP before 3.32.0 Heap Buffer Overflow via persistent_cache_read_entry_v3
CVE-2026-111377 6.5 MEDIUM FreeRDP 2.0.0 before 3.32.0 Memory Exhaustion via Static Channel Reassembly
CVE-2026-111374 5.3 MEDIUM FreeRDP from 3.30.0 before 3.32.0 Resource Exhaustion via rdpecam StartStreamsRequest
CVE-2026-111373 5.3 MEDIUM FreeRDP before 3.32.0 NULL Dereference via Zero-Length WebSocket Ping
CVE-2026-111376 5.0 MEDIUM FreeRDP 3.30.0 before 3.32.0 Heap Over-Read via Windows cliprdr FILECONTENTS_SIZE
CVE-2026-111375 4.8 MEDIUM FreeRDP 3.0.0 before 3.32.0 Out-of-Bounds Read via RAIL Window Title

IV. Related Vulnerabilities

Same product: FreeRDP
Same vendor: FreeRDP
Same weakness: CWE-787

V. Comments for CVE-2026-111382

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