CVE-2025-0518— Unchecked sscanf return value which leads to memory data leak
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 7.1版本存在安全漏洞，该漏洞源于存在未经检查的返回值和越界读取问题，允许读取可执行文件中的敏感常量。
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I. Basic Information for CVE-2025-0518
Vulnerability Information
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Vulnerability Title
Unchecked sscanf return value which leads to memory data leak
Source: CVE Program / CVE List V5
Vulnerability Description
Unchecked Return Value, Out-of-bounds Read vulnerability in FFmpeg allows Read Sensitive Constants Within an Executable. This vulnerability is associated with program files https://github.Com/FFmpeg/FFmpeg/blob/master/libavfilter/af_pan.C .
This issue affects FFmpeg: 7.1.
Issue was fixed: https://github.com/FFmpeg/FFmpeg/commit/b5b6391d64807578ab872dc58fb8aa621dcfc38a
https://github.com/FFmpeg/FFmpeg/commit/b5b6391d64807578ab872dc58fb8aa621dcfc38a This issue was discovered by: Simcha Kosman
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未加检查的返回值
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 7.1版本存在安全漏洞，该漏洞源于存在未经检查的返回值和越界读取问题，允许读取可执行文件中的敏感常量。
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
II. Public POCs for CVE-2025-0518
| # | POC Description | Source Link | Shenlong Link |
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Patches & Fixes for CVE-2025-0518 (1)
IV. Related Vulnerabilities
Same product: FFmpeg
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CVE-2026-107698
FFmpeg before 7.1.4 and 8.0.2 SSRF via RTSP Redirect Handlin -
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FFmpeg before 8.1.3 HLS Demuxer Security Check Bypass via pa -
CVE-2026-107696
FFmpeg through 9.0.2 Infinite Loop via RTSP Redirect Handlin -
CVE-2026-107695
FFmpeg before 8.1.3 HLS Demuxer Infinite Loop via Self-Refer -
CVE-2026-107678
FFmpeg through 9.0.2 Stack Exhaustion via Recursive Free of
Same vendor: FFmpeg
-
CVE-2026-107698
FFmpeg before 7.1.4 and 8.0.2 SSRF via RTSP Redirect Handlin -
CVE-2026-107696
FFmpeg through 9.0.2 Infinite Loop via RTSP Redirect Handlin -
CVE-2026-107697
FFmpeg before 8.1.3 HLS Demuxer Security Check Bypass via pa -
CVE-2026-107695
FFmpeg before 8.1.3 HLS Demuxer Infinite Loop via Self-Refer -
CVE-2026-107677
FFmpeg through 9.0.2 DASH Demuxer Infinite Loop via Empty Se
Same weakness: CWE-252
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CVE-2026-95316
Chrome 154.0.8037.57前Performance未检查返回值漏洞 -
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Dell Update Package Framework 26.07.03 前返回值未检查 -
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WebAssembly WABT 异常处理不当漏洞 -
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V. Comments for CVE-2025-0518
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