Heap out-of-bound read in CreateHtmlSubtitle in VideoLAN VLC 2.2.x due to missing check of string termination allows attackers to read data…

published 2017-05-23 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-17271

cvss: 5.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 69%
public exploits: 0; none known

Heap out-of-bound read in CreateHtmlSubtitle in VideoLAN VLC 2.2.x due to missing check of string termination allows attackers to read data beyond allocated memory and potentially crash the process (causing a denial of service) via a crafted subtitles file.

Patch / fix

distros 3

debian ubuntu arch linux

vlc Debian 14, Debian 13, Debian 12 2.2.5.1-1~deb9u1

debian advisories DEBIAN-CVE-2017-8310

vlc Ubuntu 14.04 LTS 2.1.6-0ubuntu14.04.3
vlc Ubuntu 16.04 LTS 2.2.2-5ubuntu0.16.04.3

ubuntu advisories UBUNTU-CVE-2017-8310

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

vlc Arch Linux 2.2.6-1

arch linux advisories AVG-283

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-146-05 updated 2026-05-26 cvss 5.5

ABB Ability Camera Connect

ABB Ability Camera Connect <= 1.5.0.14
affected: vendor fix, mitigation
ABB Ability Camera Connect 1.5.0.15
fixed

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

1.26% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	5.5	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

VideoLAN VLC

Classification

Weakness

CWE-125 Out-of-bounds Read

References

security.gentoo.org /glsa/201707-10
vendor-advisory
debian.org /security/2017/dsa-3899
vendor-advisory
securityfocus.com /bid/98638
vdb-entry, third-party-advisory
git.videolan.org /?p=vlc/vlc-2.2.git%3Ba=blobdiff%3Bf=modules/codec/subsdec.c%3Bh=addd8c71f30d53558fffd19059b374be45cf0f8e%3Bhp

Sources

CVE List CVE-2017-8310
NVD CVE-2017-8310

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary