Is CVE-2021-3474 in the CISA KEV catalog?

No. CVE-2021-3474 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-3474?

CVE-2021-3474 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2021-3474?

CVE-2021-3474 has an EPSS score of 1.85% (77th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-3474?

Upgrade openexr on debian 11 to 2.5.4-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2021-3474

MEDIUMEPSS 77th pctl

5.3

CVSS v3

NVD

Description

There's a flaw in OpenEXR in versions before 3.0.0-beta. A crafted input file that is processed by OpenEXR could cause a shift overflow in the FastHufDecoder, potentially leading to problems with application availability.

CWE-190Integer Overflow

How to fix

Remediation Available

openexrDebian

Fixed in:2.5.4-1CVE-2021-3474

libopenexr22Ubuntu

Fixed in:2.2.0-10ubuntu2.6USN-4900-1

Fixed in:2.2.0-11.1ubuntu1.6USN-4900-1

libopenexr24Ubuntu

Fixed in:2.3.0-6ubuntu0.5USN-4900-1

openexrUbuntu

Fixed in:2.2.0-10ubuntu2.6USN-4900-1

Fixed in:2.2.0-11.1ubuntu1.6USN-4900-1

Fixed in:2.3.0-6ubuntu0.5USN-4900-1

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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

1.85%probability of exploitation in 30 days

77thpercentile

Elevated risk: more likely to be exploited than 77% of all known CVEs.

References

Patch1

bugzilla.redhat.com

Third-Party Advisory4

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 2024-11-21.