CVE-2017-9993

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.

Published: 2017-06-28 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-9993 is rated High Risk (67.9/100): CVSS High severity, with high exploitation likelihood (EPSS 56.17%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +3.55% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2017-9993

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-04 52.62% 56.17% +3.55%
2 2026-03-01 56.17% 52.62% -3.55%
3 2026-02-04 — 56.17% —

Full EPSS history (44 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-9993

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2017-9993

OS Trackers for CVE-2017-9993

vendor priority summary link
debian not yet assigned CVE-2017-9993 not yet assigned priority: Debian including 1 source packages (ffmpeg), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2017-9993
ubuntu medium CVE-2017-9993 medium priority: Ubuntu including 2 source packages (ffmpeg, libav), 36 status rows across 18 suites (artful, bionic, cosmic, disco, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial, yakkety, zesty): DNE 17, not-affected 13, ignored 2, released 2, needed 1, needs-triage 1. https://ubuntu.com/security/CVE-2017-9993

Affected software / configurations for CVE-2017-9993

Vendor Product Version Raw CPE
ffmpeg ffmpeg < 2.8.12 cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
ffmpeg ffmpeg >= 3.0, < 3.1.9 cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
ffmpeg ffmpeg >= 3.2, < 3.2.6 cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
ffmpeg ffmpeg >= 3.3, < 3.3.2 cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

References for CVE-2017-9993

cvelogic Threat Intelligence