Is CVE-2021-37620 in the CISA KEV catalog?

No. CVE-2021-37620 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-37620?

CVE-2021-37620 has a CVSS v3 base score of 4.7 (MEDIUM).

What is the EPSS score for CVE-2021-37620?

CVE-2021-37620 has an EPSS score of 1.05% (60th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-37620?

Upgrade exiv2 on debian 11 to 0.27.3-3+deb11u2 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2021-37620

MEDIUM

4.7

CVSS v3

NVD

Description

Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. An out-of-bounds read was found in Exiv2 versions v0.27.4 and earlier. The out-of-bounds read is triggered when Exiv2 is used to read the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.5.

CWE-125Out-of-bounds Read

How to fix

Remediation Available

exiv2Debian

Fixed in:0.27.3-3+deb11u2CVE-2021-37620

Fixed in:0.27.5-1CVE-2021-37620

exiv2Ubuntu

Fixed in:0.25-2.1ubuntu16.04.7+esm4USN-5043-1

Fixed in:0.25-3.1ubuntu0.18.04.11USN-5043-1

Fixed in:0.27.2-8ubuntu2.6USN-5043-1

Fixed in:0.27.2-8ubuntu2.7USN-5043-2

libexiv2-14Ubuntu

Fixed in:0.25-2.1ubuntu16.04.7+esm4USN-5043-1

Fixed in:0.25-3.1ubuntu0.18.04.11USN-5043-1

libexiv2-27Ubuntu

Fixed in:0.27.2-8ubuntu2.7USN-5043-2

Fixed in:0.27.2-8ubuntu2.6USN-5043-1

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 ComplexityHigh

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.05%probability of exploitation in 30 days

60thpercentile

Moderate risk: more likely to be exploited than 60% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory2

Other references3

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.