Is CVE-2020-27843 in the CISA KEV catalog?

No. CVE-2020-27843 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-27843?

CVE-2020-27843 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2020-27843?

CVE-2020-27843 has an EPSS score of 1.68% (74th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-27843?

Upgrade openjpeg2 on debian 11 to 2.4.0-1 or later. Fixes are available for 7 affected products.

CVE & CISA-KEV Catalog

CVE-2020-27843

MEDIUMEPSS 74th pctl

5.5

CVSS v3

NVD

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.

CWE-125Out-of-bounds Read

How to fix

Remediation Available

openjpeg2Debian

Fixed in:2.4.0-1CVE-2020-27843

ghostscriptUbuntu

Fixed in:9.26~dfsg+0-0ubuntu0.16.04.14USN-4686-1

Fixed in:9.26~dfsg+0-0ubuntu0.18.04.14USN-4686-1

libgs9Ubuntu

Fixed in:9.26~dfsg+0-0ubuntu0.16.04.14USN-4686-1

Fixed in:9.26~dfsg+0-0ubuntu0.18.04.14USN-4686-1

libopenjp2-7Ubuntu

Fixed in:2.1.2-1.1+deb9u6ubuntu0.1~esm3USN-5952-1

Fixed in:2.3.0-2+deb10u2build0.18.04.1USN-5952-1

Fixed in:2.3.1-1ubuntu4.20.04.1USN-4685-1

libopenjp3d7Ubuntu

Fixed in:2.1.2-1.1+deb9u6ubuntu0.1~esm3USN-5952-1

Fixed in:2.3.0-2+deb10u2build0.18.04.1USN-5952-1

Fixed in:2.3.1-1ubuntu4.20.04.1USN-4685-1

libopenjpip7Ubuntu

Fixed in:2.1.2-1.1+deb9u6ubuntu0.1~esm3USN-5952-1

Fixed in:2.3.0-2+deb10u2build0.18.04.1USN-5952-1

Fixed in:2.3.1-1ubuntu4.20.04.1USN-4685-1

openjpeg2Ubuntu

Fixed in:2.1.2-1.1+deb9u6ubuntu0.1~esm3USN-5952-1

Fixed in:2.3.0-2+deb10u2build0.18.04.1USN-5952-1

Fixed in:2.3.1-1ubuntu4.20.04.1USN-4685-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

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

Exploit Intelligence

1.68%probability of exploitation in 30 days

74thpercentile

Elevated risk: more likely to be exploited than 74% of all known CVEs.

References

Patch2

Third-Party Advisory4

Other references1

lists.fedoraproject.org

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.