MEDIUM
CVE-2020-27843
CWE-125Published: January 5, 2021· Updated: Jun 17, 2026
5.5
CVSS v3.1
Official Description
A flaw was found in OpenJPEG in versions prior to 2.4.0. This flaw allows an attacker to provide specially crafted input to the conversion or encoding functionality, causing an out-of-bounds read. The highest threat from this vulnerability is system availability.
Technical Analysis
CVE-2020-27843 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (14)
→
https://bugzilla.redhat.com/show_bug.cgi?id=1907516Issue Tracking · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2022/04/msg00006.htmlMailing List · Third Party Advisory
→
https://security.gentoo.org/glsa/202101-29Third Party Advisory
→
https://www.debian.org/security/2021/dsa-4882Third Party Advisory
→
https://www.oracle.com//security-alerts/cpujul2021.htmlPatch · Third Party Advisory
→
https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch · Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1907516Issue Tracking · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2022/04/msg00006.htmlMailing List · Third Party Advisory
→
https://security.gentoo.org/glsa/202101-29Third Party Advisory
→
https://www.debian.org/security/2021/dsa-4882Third Party Advisory
→
https://www.oracle.com//security-alerts/cpujul2021.htmlPatch · Third Party Advisory
→
https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch · Third Party Advisory
Quick Facts
CVE IDCVE-2020-27843
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-125
CISA KEVNo
Affected4 vendor(s)
PublishedJan 5, 2021
Related CVEs (CWE-125)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-27843 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.