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CVE-2026-114043— Vulnerability in FreeRDP

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 3.32.1 版本之前的 FreeRDP 中，WinPR 组件在将剪贴板中的 PNG 图像合成为 CF_DIB 格式时存在基于堆的越界读取漏洞。具体原因是：函数在处理位深度低于 8 的 PNG 图像时，会分配一个位压缩（bit-packed）缓冲区；而函数在复制图像行时，却错误地假设每个像素占用一个字节。攻击者可利用此差异，通过恶意的 RDP 服务器向受害者发送精心构造的低位深度 PNG 剪贴板数据；当受害者粘贴该数据时，将导致数兆字节的堆内存被泄露。

CVSS 6.5 · Medium Updated Oct 21, 2026

Possible ATT&CK Techniques 2 AI

T1068 · Exploitation for Privilege Escalation T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

Vulnerability in FreeRDP

Source: CVE Program / CVE List V5

Vulnerability Description

FreeRDP before 3.32.1 contains a heap-based out-of-bounds read in WinPR's clipboard PNG-to-CF_DIB synthesis because winpr_read_png_from_buffer() allocates a bit-packed buffer for PNGs with bit depth below 8, while winpr_bitmap_write_buffer() copies rows assuming one byte per pixel. A malicious RDP server can send a crafted low-bit-depth PNG clipboard payload that, when pasted by the victim, discloses megabytes of heap memory.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

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	0 ~ 3.32.1	-

II. Public POCs for CVE-2026-114043

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-114043

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Other References for CVE-2026-114043 (2)

https://www.vulncheck.com/advisories/vulnerability-in-freerdp third-party-advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f3vg-h45x-6wgf vendor-advisory

https://www.cve.org/CVERecord?id=CVE-2026-114043

Same Patch Batch · FreeRDP · 2026-10-21 · 7 CVEs total

CVE-2026-114045	8.8 HIGH	FreeRDP before 3.32.1 Heap Buffer Overflow via rdpsnd_server_select_format
CVE-2026-114047	6.8 MEDIUM	FreeRDP 2.0.0 before 3.32.0 Proxy Improper TLS Certificate Validation
CVE-2026-114046	6.5 MEDIUM	FreeRDP 3.0.0 before 3.32.0 null-pointer dereference via emulated smartcard
CVE-2026-114042	6.5 MEDIUM	FreeRDP 3.32.0 Use-After-Free via drdynvc Virtual Channel PDU
CVE-2026-114041	6.5 MEDIUM	FreeRDP before 3.32.1 Heap Out-of-Bounds Read via RD Gateway Consent Message
CVE-2026-114044	5.3 MEDIUM	FreeRDP before 3.32.1 Android Client Heap OOB Read via Graphics Pipeline

IV. Related Vulnerabilities

Same product: FreeRDP

Same vendor: FreeRDP

Same weakness: CWE-125

V. Comments for CVE-2026-114043

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Goal Reached Thanks to every supporter — we hit 100%!

CVE-2026-114043— Vulnerability in FreeRDP

Quick assessment

Possible ATT&CK Techniques 2 AI

I. Basic Information for CVE-2026-114043

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2026-114043

III. Intelligence Information for CVE-2026-114043

Other References for CVE-2026-114043 (2)

Same Patch Batch · FreeRDP · 2026-10-21 · 7 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2026-114043

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