What’s Vulnerable › Vulnerabilities

CVE-2017-9993

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 16.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-06-28 · updated 2026-06-17
• Weakness: CWE-200

Description

FFmpeg before 2.8.12, 3.0.x and 3.1.x before 3.1.9, 3.2.x before 3.2.6, and 3.3.x before 3.3.2 does not properly restrict HTTP Live Streaming filename extensions and demuxer names, which allows attackers to read arbitrary files via crafted playlist data.

Affected products

• Debian Linux: 8.0, 9.0
• FFmpeg: before 2.8.12; from 3.0 before 3.1.9; from 3.2 before 3.2.6; from 3.3 before 3.3.2 — fixed in 2.8.12, 3.1.9, 3.2.6, 3.3.2

How to fix

Upgrade to a fixed version: FFmpeg 2.8.12, 3.1.9, 3.2.6, 3.3.2. Check the vendor advisory for mitigations.

References

• http://www.debian.org/security/2017/dsa-3957
• http://www.securityfocus.com/bid/99315
• https://github.com/FFmpeg/FFmpeg/commit/189ff4219644532bdfa7bab28dfedaee4d6d4021
• https://github.com/FFmpeg/FFmpeg/commit/a5d849b149ca67ced2d271dc84db0bc95a548abb
• https://lists.debian.org/debian-lts-announce/2019/01/msg00006.html
• http://www.debian.org/security/2017/dsa-3957
• http://www.securityfocus.com/bid/99315
• https://github.com/FFmpeg/FFmpeg/commit/189ff4219644532bdfa7bab28dfedaee4d6d4021
• https://github.com/FFmpeg/FFmpeg/commit/a5d849b149ca67ced2d271dc84db0bc95a548abb
• https://lists.debian.org/debian-lts-announce/2019/01/msg00006.html

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