Improper input validation in openjpeg
Priority LOW 37CWE-20Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
EPSS 0.01394 72nd percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | openjpeg | openjpeg 2.4.0 | — | No fix listed | CNA |
- openjpeg Vendor— Affected openjpeg 2.4.0 Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:uclouvain:openjpeg:*:*:*:*:*:*:*:* | before 2.4.0 | Vulnerable | The OpenJPEG Project |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:a:oracle:outside_in_technology:8.5.5:*:*:*:*:*:*:* | 8.5.5 | Vulnerable | Oracle |
- cpe:2.3:a:uclouvain:openjpeg:*:*:*:*:*:*:*:* Versions before 2.4.0 Vulnerable ·The OpenJPEG Project
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:a:oracle:outside_in_technology:8.5.5:*:*:*:*:*:*:* Versions 8.5.5 Vulnerable ·Oracle
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
Not affected: 1 product
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2020-27844
- 2026-10-03 Alias added: GHSA-p652-vj2w-8mcw
References
Sources
- CVE-2020-27844 · CVE Program
- CVE-2020-27844 · NVD
- FIRST EPSS
- GHSA-p652-vj2w-8mcw · GitHub Advisory Database · CC BY 4.0
- CVE-2020-27844 · Red Hat security data · CC BY 4.0
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