CVE-2021-3566
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I. Basic Information for CVE-2021-3566
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
Prior to ffmpeg version 4.3, the tty demuxer did not have a 'read_probe' function assigned to it. By crafting a legitimate "ffconcat" file that references an image, followed by a file the triggers the tty demuxer, the contents of the second file will be copied into the output file verbatim (as long as the `-vcodec copy` option is passed to ffmpeg).
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
信息暴露
Source: NVD (National Vulnerability Database)
Vulnerability Title
FFmpeg 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FFmpeg是FFmpeg（Ffmpeg）团队的一套可录制、转换以及流化音视频的完整解决方案。 FFmpeg 中存在信息泄露漏洞。目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。
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 |
|---|---|---|---|---|
| - | ffmpeg | ffmpeg 4.3 | - |
II. Public POCs for CVE-2021-3566
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · n/a · 2021-08-05 · 54 CVEs total
| CVE-2021-22919 | Citrix ADC and NetScaler Gateway安全漏洞 | |
| CVE-2021-3655 | Linux kernel 输入验证错误漏洞 | |
| CVE-2021-35325 | TotoLink A720R 缓冲区错误漏洞 | |
| CVE-2021-20592 | Mitsubishi Electric GOT2000 安全漏洞 | |
| CVE-2021-22517 | Micro Focus Data Protector 安全漏洞 | |
| CVE-2021-26586 | HPE Edgeline Infrastructure Management 安全漏洞 | |
| CVE-2021-3642 | Red Hat Wildfly Elytron 安全漏洞 | |
| CVE-2021-1630 | MuleSoft Mule 代码问题漏洞 | |
| CVE-2021-22924 | libcurl 资源管理错误漏洞 | |
| CVE-2021-22920 | Citrix Application Delivery Controller安全漏洞 | |
| CVE-2021-37156 | Redmine 代码问题漏洞 | |
| CVE-2021-22927 | Citrix Application Delivery Controller授权问题漏洞 | |
| CVE-2021-22928 | Citrix Systems Citrix Virtual Apps and Desktops 安全漏洞 | |
| CVE-2021-21893 | Foxit PDF Reader和Foxit PDF Editor 资源管理错误漏洞 | |
| CVE-2021-21831 | Foxit PDF Reader和Foxit PDF Editor 资源管理错误漏洞 | |
| CVE-2021-21870 | Foxit PDF Reader和Foxit PDF Editor 资源管理错误漏洞 | |
| CVE-2021-21785 | IOBit Advanced SystemCare 安全漏洞 | |
| CVE-2021-21792 | IOBit Advanced SystemCare 安全漏洞 | |
| CVE-2021-21791 | IOBit Advanced SystemCare 安全漏洞 | |
| CVE-2021-21790 | IOBit Advanced SystemCare 安全漏洞 |
Showing top 20 of 54 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: ffmpeg
- CVE-2026-40962
FFmpeg 安全漏洞 - CVE-2025-59734
Heap-buffer-overflow write in FFmpeg SANM process_ftch - CVE-2025-59733
Heap-buffer-overflow write in FFmpeg EXR dwa_uncompress - CVE-2025-59732
Heap-buffer-overflow write in FFmpeg EXR dwa_uncompress - CVE-2025-59731
Heap-buffer-overflow write in FFmpeg EXR dwa_uncompress
Same weakness: CWE-200
- CVE-2026-42333
quarkus-openapi-generator has overly broad path-parameter ma - CVE-2026-8198
Activity Logs, User Activity Tracking, Multisite Activity Lo - CVE-2026-42456
AnythingLLM: Cross-User TTS Audio Disclosure via Chat ID (ID - CVE-2026-41520
Cillium exposes sensitive information included in the cilium - CVE-2026-25199
Apache CloudStack: Proxmox Extension Allows Unauthorized Cro
V. Comments for CVE-2021-3566
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