HOME VULNERABILITIESCVE-2020-27814

HIGH

CVE-2020-27814

CWE-122Published: January 26, 2021· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

A heap-buffer overflow was found in the way openjpeg2 handled certain PNG format files. An attacker could use this flaw to cause an application crash or in some cases execute arbitrary code with the permission of the user running such an application.

Technical Analysis

CVE-2020-27814 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 complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges Req.None

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

Debian1 product(s)

debian linux

uclouvain1 product(s)

openjpeg

Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1901998

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1901998

ADVISORYhttps://github.com/uclouvain/openjpeg/issues/1283

ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/02/msg00011.html

ADVISORYhttps://security.gentoo.org/glsa/202101-29

ADVISORYhttps://www.debian.org/security/2021/dsa-4882

ADVISORYhttps://www.oracle.com//security-alerts/cpujul2021.html

ADVISORYhttps://github.com/uclouvain/openjpeg/issues/1283

ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/02/msg00011.html

ADVISORYhttps://security.gentoo.org/glsa/202101-29

ADVISORYhttps://www.debian.org/security/2021/dsa-4882

ADVISORYhttps://www.oracle.com//security-alerts/cpujul2021.html

All References (12)

→

https://bugzilla.redhat.com/show_bug.cgi?id=1901998Issue Tracking · Patch · Third Party Advisory

→

https://github.com/uclouvain/openjpeg/issues/1283Exploit · Issue Tracking · Third Party Advisory

→

https://lists.debian.org/debian-lts-announce/2021/02/msg00011.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.htmlThird Party Advisory

→

https://bugzilla.redhat.com/show_bug.cgi?id=1901998Issue Tracking · Patch · Third Party Advisory

→

https://github.com/uclouvain/openjpeg/issues/1283Exploit · Issue Tracking · Third Party Advisory

→

https://lists.debian.org/debian-lts-announce/2021/02/msg00011.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.htmlThird Party Advisory

Quick Facts

CVE IDCVE-2020-27814

CVSS Score7.8 / 10

SeverityHIGH

WeaknessCWE-122

CISA KEVNo

Affected2 vendor(s)

PublishedJan 26, 2021

Related CVEs (CWE-122)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2020-27814 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.

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