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CVE-2026-24677— FreeRDP has a heap-buffer-overflow in ecam_encoder_compress_h264

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是FreeRDP团队的一款开源的远程桌面协议（RDP）的实现。 FreeRDP 3.22.0之前版本存在资源管理错误漏洞，该漏洞源于ecam_encoder_compress_h264信任服务器控制的维度且未验证源缓冲区大小，可能导致越界读取。

AI Predicted 7.5 Difficulty: Easy EPSS 0.56% · P45

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-24677

Vulnerability Information
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Vulnerability Title
FreeRDP has a heap-buffer-overflow in ecam_encoder_compress_h264
Source: CVE Program / CVE List V5
Vulnerability Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, ecam_encoder_compress_h264 trusts server-controlled dimensions and does not validate the source buffer size, leading to an out-of-bounds read in sws_scale. This vulnerability is fixed in 3.22.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
FreeRDP 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeRDP是FreeRDP团队的一款开源的远程桌面协议（RDP）的实现。 FreeRDP 3.22.0之前版本存在资源管理错误漏洞，该漏洞源于ecam_encoder_compress_h264信任服务器控制的维度且未验证源缓冲区大小，可能导致越界读取。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FreeRDP FreeRDP < 3.22.0 -

II. Public POCs for CVE-2026-24677

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III. Intelligence Information for CVE-2026-24677

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Same Patch Batch · FreeRDP · 2026-02-09 · 12 CVEs total

CVE-2026-24684 FreeRDP has a Heap-use-after-free in play_thread
CVE-2026-24683 FreeRDP has a heap-use-after-free in ainput_send_input_event
CVE-2026-24682 FreeRDP has a Heap-buffer-overflow in audio_formats_free
CVE-2026-24681 FreeRDP has a heap-use-after-free in urb_bulk_transfer_cb
CVE-2026-24680 FreeRDP has a heap-use-after-free in update_pointer_new(SDL)
CVE-2026-24679 FreeRDP has a heap-buffer-overflow in urb_select_interface
CVE-2026-24678 FreeRDP has a Heap-use-after-free in cam_v4l_stream_capture_thread
CVE-2026-24676 FreeRDP has a heap-use-after-free in audio_format_compatible
CVE-2026-24675 FreeRDP has a Heap-use-after-free in urb_select_interface
CVE-2026-24491 FreeRDP has a heap-use-after-free in video_timer
CVE-2026-23948 FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2()

IV. Related Vulnerabilities

Same product: FreeRDP
Same vendor: FreeRDP
Same weakness: CWE-416

V. Comments for CVE-2026-24677

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