CVE-2020-27844: debian debian_linux Improper Input Validation
Vulnerability summary
CVE-2020-27844 is a high (CVSS 8.3) Improper Input Validation vulnerability in debian debian_linux. EPSS estimates a 1.39% chance of exploitation in the next 30 days, higher than 71.9% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 5 · Related 4Timeline
- 05-01-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A flaw was found in openjpeg's src/lib/openjp2/t2.c in versions prior to 2.4.0. This flaw allows an attacker to provide crafted input to openjpeg during conversion and encoding, causing an out-of-bounds write. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.39%
Chance of exploitation in the next 30 days
Percentile
72%
Versus all other CVEs
30-day change
+0.02 pp
From 1.38% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Alpine1 product
- openjpeg< 2.4.0-r0
Debian1 product
- debian_linuxEOL9.0
Mageia1 product
- openjpeg2< 2.4.0-1.mga7
Oracle1 product
Ubuntu1 product
- insighttoolkit4All versions (No fix recorded)
Uclouvain1 product
- openjpeg< 2.4.0
6 vendors · 6 products
References
13 links
lists.debian.org/debian-lts-announce/2021/02/msg00011.htmlMailing ListX Refsource MLISTThird Party Advisory