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CVE-2026-111376— FreeRDP 3.30.0 before 3.32.0 Heap Over-Read via Windows cliprdr FILECONTENTS_SIZE

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.

在 FreeRDP 3.30.0 至 3.32.0（不含）版本中，Windows 客户端的 CliprdrStream_New 函数存在一个堆越界读取漏洞。该漏洞允许恶意的 RDP 服务器通过发送截短的剪贴板响应，触发对无效内存的读取。具体来说，当用户粘贴远程文件时，攻击者可以在响应 FILECONTENTS_SIZE 请求时，将 cbRequested 字段设置为少于 8 字节，从而导致客户端崩溃或剪贴板流数据损坏。

CVSS 5.0 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-111376

Vulnerability Information
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Vulnerability Title
FreeRDP 3.30.0 before 3.32.0 Heap Over-Read via Windows cliprdr FILECONTENTS_SIZE
Source: CVE Program / CVE List V5
Vulnerability Description
FreeRDP from 3.30.0 before 3.32.0 contains a heap out-of-bounds read vulnerability in the Windows client's CliprdrStream_New that allows malicious RDP servers to trigger invalid memory reads via short clipboard responses. Attackers can answer a FILECONTENTS_SIZE request with a cbRequested of fewer than eight bytes when a user pastes a remote file, crashing the client or corrupting the stream size.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
FreeRDP FreeRDP 3.30.0 ~ 3.32.0 -

II. Public POCs for CVE-2026-111376

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III. Intelligence Information for CVE-2026-111376

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Vendor Advisories for CVE-2026-111376 (2)

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

CVE-2026-111382 8.8 HIGH FreeRDP before 3.32.0 Heap Out-of-Bounds Write in AVC444 YUV444 Combine
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-2026-111375 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-125

V. Comments for CVE-2026-111376

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