CVE-2020-26664: debian debian_linux Out-of-bounds Write
CVSS: 7.8v3.1HighModified
AliasesopenSUSE-SU-2021:0714-1UBUNTU-CVE-2020-26664DEBIAN-CVE-2020-26664DLA-3050-1openSUSE-SU-2021:0691-1
Published 08-01-2021Last modified 08-10-2026
Vulnerability summary
CVE-2020-26664 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 1.49% chance of exploitation in the next 30 days, higher than 73.7% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.8/10
010
High · v3.1 (NVD)EPSS score
1.49%
0%100%
Low · +0.02 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 6 · Related 5Timeline
- 08-01-2021PublishedVulnerability first disclosed.
- 08-10-2026Last modifiedVulnerability information updated.
Description
A vulnerability in EbmlTypeDispatcher::send in VideoLAN VLC media player 3.0.11 allows attackers to trigger a heap-based buffer overflow via a crafted .mkv file.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 7.8Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.49%
Chance of exploitation in the next 30 days
Percentile
74%
Versus all other CVEs
30-day change
+0.02 pp
From 1.47% on 20-09-2026
20-09-202620-10-2026
EPSS score1.49%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (gist.githubusercontent.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian2 products
- vlc< 3.0.12-1 | < 3.0.12-0+deb9u1
- debian_linuxEOL9.0 | 10.0
Opensuse1 product
- vlc&distro=openSUSE Leap 15.2< 3.0.13-lp152.2.12.1
Suse1 product
- vlc&distro=SUSE Package Hub 15 SP2< 3.0.13-bp152.2.12.1
Ubuntu1 product
- vlcAll versions (No fix recorded)
Videolan1 product
- vlc_media_player< 3.0.12
5 vendors · 6 products
References
14 links
- lists.opensuse.org/archives/…Advisory
- videolan.comREPORT
Show all 14 references
- vlc.comREPORT
- lists.opensuse.org/archives/…Advisory