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CVE-2021-37620

20
FAUCET Score

CVE-2021-37620 is an out-of-bounds read vulnerability in Exiv2 versions v0.27.4 and earlier, affecting its command-line utility and C++ library for image metadata manipulation. This flaw can be triggered by processing a specially crafted image file, impacting various Debian and Fedora distributions. The vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring user interaction. A successful exploit could lead to a denial of service (DoS) for the affected system. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.27.5CPE matchmatch criteria
cpe:2.3:a:exiv2:exiv2:*:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.7MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.05%
Probability of exploitation in next 30 days
EPSS Percentile
60.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0105 is in the 71st percentile among its peer group of 5,765 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: 17009-16823Fixed in: 0.27.5-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 0.27.5-1
microsoftpatch availablevia msrc
Product: cbl2 exiv2 0.27.5-1 on CBL Mariner 2.0Fixed in: 0.27.5-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 0.27.5-1
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: compat-exiv2-026
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: exiv2
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: exiv2

Vendor Advisories (3)

microsoft2022-Jan/CVE-2021-37620

CVE-2021-37620

Jan 11, 2022
microsoft2021-Aug/CVE-2021-37620Moderate

Out-of-bounds read in XmpTextValue::read()

Aug 10, 2021
redhatCVE-2021-37620Low

exiv2: out-of-bounds read in XmpTextValue::read()

Aug 8, 2021

References

github.com / Exiv2/exiv2/pull/1769
PatchThird Party Advisory
github.com / Exiv2/exiv2/security/advisories/GHSA-v5g7-46xf-h728
Third Party Advisory
lists.debian.org / debian-lts-announce/2023/01/msg00004.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/FMDT4PJB7P43WSOM3TRQIY3J33BAFVVE
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/UYGDELIFFJWKUU7SO3QATCIXCZJERGAC
security.gentoo.org / glsa/202312-06