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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-65703— FFmpeg 2.7 - 8.1.2 Out-of-Bounds Write in TDSC Video Decoder

Quick assessment

Affected
FFmpeg FFmpeg
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.

FFmpeg是FFmpeg组织开源的一套可录制、转换以及流化音视频的完整解决方案。 FFmpeg 2.7版本至8.1.2版本存在缓冲区错误漏洞，该漏洞源于TDSC视频解码器中的越界写入，tdsc_parse_tdsf()函数在调用av_frame_get_buffer()之前未能取消引用现有参考帧，导致tdsc_blit()和tdsc_yuv2rgb()将攻击者控制的像素数据写入超出小型参考帧缓冲区的末尾，可能允许远程攻击者通过提供特制的AVI文件造成堆损坏，导致进程崩溃并可能执行代码。

CVSS 7.8 · High EPSS 0.29% · P20

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
FFmpeg FFmpeg 2.7≤ 8.1.2 affected
fd3ee52fab34d98a95b787d0b5ff45685766200c unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-65703

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
FFmpeg 2.7 - 8.1.2 Out-of-Bounds Write in TDSC Video Decoder
Source: CVE Program / CVE List V5
Vulnerability Description
FFmpeg versions 2.7 through 8.1.2 contain an out-of-bounds write vulnerability in the TDSC video decoder that allows remote attackers to cause heap corruption by supplying a crafted AVI file that changes frame dimensions across TDSF frames. The tdsc_parse_tdsf() function fails to unreference the existing reference frame before calling av_frame_get_buffer(), causing tdsc_blit() and tdsc_yuv2rgb() to write attacker-controlled pixel data beyond the end of the undersized reference frame buffer, resulting in a process crash and potential code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/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
Vulnerability Title
FFmpeg 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FFmpeg是FFmpeg组织开源的一套可录制、转换以及流化音视频的完整解决方案。 FFmpeg 2.7版本至8.1.2版本存在缓冲区错误漏洞，该漏洞源于TDSC视频解码器中的越界写入，tdsc_parse_tdsf()函数在调用av_frame_get_buffer()之前未能取消引用现有参考帧，导致tdsc_blit()和tdsc_yuv2rgb()将攻击者控制的像素数据写入超出小型参考帧缓冲区的末尾，可能允许远程攻击者通过提供特制的AVI文件造成堆损坏，导致进程崩溃并可能执行代码。
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 2.7 ~ 8.1.2 -

II. Public POCs for CVE-2026-65703

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-65703

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-65703 (2)

News Coverage for CVE-2026-65703 (1)

Same Patch Batch · FFmpeg · 2026-07-23 · 4 CVEs total

CVE-2026-65706 7.8 HIGH FFmpeg 3.0 - 8.1.2 vf_swaprect Out-of-Bounds Write via NV12 Frame Processing
CVE-2026-65705 7.8 HIGH FFmpeg 3.4 - 8.1.2 vf_floodfill Out-of-Bounds Write via filter_frame()
CVE-2026-65704 7.8 HIGH FFmpeg 8.1.2 Out-of-Bounds Write via TY Demuxer and Shorten Decoder

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-65703

No comments yet

Leave a comment