The MP4_ReadBox_String function in modules/demux/mp4/libmp4.c in VideoLAN VLC media player before 2.1.6 allows remote attackers to trigger an unintended zero-size malloc and conduct buffer overflow attacks, and consequently execute arbitrary code, via a box size of 7.
Conclusion & alert: CVE-2014-9628 is rated Moderate Risk (59.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.16%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 2026-06-15 | 1.63% | 2.16% | +0.53% |
| 2 | 2025-03-30 | 2.05% | 1.63% | -0.42% |
| 3 | 2025-03-29 | — | 2.05% | — |
Full EPSS history (9 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2014-9628 not yet assigned priority: Debian including 1 source packages (vlc), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2014-9628 |
gentoo
|
normal | CVE-2014-9628: 1 GLSA(s) (201603-08), 1 atom(s) (media-video/vlc); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2014-9628 |
ubuntu
|
medium | CVE-2014-9628 medium priority: Ubuntu including 1 source packages (vlc), 10 status rows across 10 suites (lucid, precise, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 5, released 3, ignored 2. | https://ubuntu.com/security/CVE-2014-9628 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| videolan | vlc_media_player | < 2.1.6 | cpe:2.3:a:videolan:vlc_media_player:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://openwall.com/lists/oss-security/2015/01/20/5 | Mailing List Patch Third Party Advisory |
| https://github.com/videolan/vlc/commit/2e7c7091a61aa5d07e7997b393d821e91f593c39 | Patch Third Party Advisory |
| https://www.videolan.org/security/sa1501.html | Vendor Advisory |