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CVE-2025-59730— Heap-buffer-overflow write in FFmpeg SANM decoding due to lack of bounds-checking in old_codec48

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 8.0之前版本存在安全漏洞，该漏洞源于解码帧时未检查解码数据是否超出分配缓冲区，可能导致堆缓冲区溢出。

AI Predicted 7.5 Difficulty: Easy EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2025-59730

Vulnerability Information
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Vulnerability Title
Heap-buffer-overflow write in FFmpeg SANM decoding due to lack of bounds-checking in old_codec48
Source: CVE Program / CVE List V5
Vulnerability Description
When decoding a frame for a SANM file (ANIM v0 variant), the decoded data can be larger than the buffer allocated for it. Frames encoded with codec 48 can specify their resolution (width x height). A buffer of appropriate size is allocated depending on the resolution. This codec can encode the frame contents using a run-length encoding algorithm. There are no checks that the decoded frame fits in the allocated buffer, leading to a heap-buffer-overflow. process_frame_obj initializes the buffers based on the frame resolution: We recommend upgrading to version 8.0 or beyond.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:P/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
FFmpeg 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FFmpeg是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 8.0之前版本存在安全漏洞，该漏洞源于解码帧时未检查解码数据是否超出分配缓冲区，可能导致堆缓冲区溢出。
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 829680f96a7a7ff02d1543895ec0fb713309d5c0 ~ 8.0 -

II. Public POCs for CVE-2025-59730

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III. Intelligence Information for CVE-2025-59730

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Vendor Pages for CVE-2025-59730 (1)

Same Patch Batch · FFmpeg · 2025-10-06 · 7 CVEs total

CVE-2025-59733 Heap-buffer-overflow write in FFmpeg EXR dwa_uncompress
CVE-2025-59734 Heap-buffer-overflow write in FFmpeg SANM process_ftch
CVE-2025-59728 Heap-buffer-overflow write in FFmpeg MDASH resolve_content_path
CVE-2025-59731 Heap-buffer-overflow write in FFmpeg EXR dwa_uncompress
CVE-2025-59732 Heap-buffer-overflow write in FFmpeg EXR dwa_uncompress
CVE-2025-59729 Heap-buffer-overflow read in FFmpeg DHAV get_duration

IV. Related Vulnerabilities

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

V. Comments for CVE-2025-59730

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