Is CVE-2021-29338 in the CISA KEV catalog?

No. CVE-2021-29338 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-29338?

CVE-2021-29338 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-29338?

CVE-2021-29338 has an EPSS score of 1.56% (72th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-29338?

Upgrade openjpeg2 on debian 11 to 2.4.0-3+deb11u1 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2021-29338

MEDIUMEPSS 72th pctl

5.5

CVSS v3

NVD

Description

Integer Overflow in OpenJPEG v2.4.0 allows remote attackers to crash the application, causing a Denial of Service (DoS). This occurs when the attacker uses the command line option "-ImgDir" on a directory that contains 1048576 files.

CWE-190Integer Overflow

How to fix

Remediation Available

openjpeg2Debian

Fixed in:2.4.0-3+deb11u1CVE-2021-29338

Fixed in:2.4.0-4CVE-2021-29338

libopenjp2-7Ubuntu

Fixed in:2.1.2-1.1+deb9u6ubuntu0.1~esm6USN-7083-1

Fixed in:2.3.0-2+deb10u2ubuntu0.1~esm3USN-7083-1

Fixed in:2.3.1-1ubuntu4.20.04.3USN-7083-1

Fixed in:2.4.0-6ubuntu0.2USN-7083-1

Fixed in:2.5.0-2ubuntu0.2USN-7083-1

libopenjp3d7Ubuntu

Fixed in:2.1.2-1.1+deb9u6ubuntu0.1~esm6USN-7083-1

Fixed in:2.3.0-2+deb10u2ubuntu0.1~esm3USN-7083-1

Fixed in:2.3.1-1ubuntu4.20.04.3USN-7083-1

Fixed in:2.4.0-6ubuntu0.2USN-7083-1

libopenjpip7Ubuntu

Fixed in:2.1.2-1.1+deb9u6ubuntu0.1~esm6USN-7083-1

Fixed in:2.3.0-2+deb10u2ubuntu0.1~esm3USN-7083-1

Fixed in:2.3.1-1ubuntu4.20.04.3USN-7083-1

Fixed in:2.4.0-6ubuntu0.2USN-7083-1

Fixed in:2.5.0-2ubuntu0.2USN-7083-1

openjpeg2Ubuntu

Fixed in:2.1.2-1.1+deb9u6ubuntu0.1~esm6USN-7083-1

Fixed in:2.3.0-2+deb10u2ubuntu0.1~esm3USN-7083-1

Fixed in:2.3.1-1ubuntu4.20.04.3USN-7083-1

Fixed in:2.4.0-6ubuntu0.2USN-7083-1

Fixed in:2.5.0-2ubuntu0.2USN-7083-1

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

1.56%probability of exploitation in 30 days

72ndpercentile

Elevated risk: more likely to be exploited than 72% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory2

Other references3

Related Vulnerabilities

Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix
CVE-2019-11477	High	7.5	99%	-	Fix
CVE-2023-44443	High	7.8	94%	-	Fix
CVE-2014-0569	High	9.3	90%	-	-
CVE-2017-3599	High	7.5	90%	-	Fix
CVE-2023-21716	Critical	9.8	82%	-	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 2025-11-03.