CVE-2021-34334

Name: CVE-2021-34334
Creator: NVD / NIST
Published: 2021-08-09T18:15:07.513+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 1.10%

Last modified Jun 17, 2026

CVE-2021-34334 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. An infinite loop is triggered when Exiv2 is used to read the metadata of a crafted image file. EPSS estimates a 1.10% chance of exploitation in the next 30 days.

Description

Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. An infinite loop 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.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

1.10%

61.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Exiv2	Exiv2	<= 0.27.4
Fedoraproject	Fedora	33
Fedoraproject	Fedora	34
Debian	Debian Linux	10.0

References

https://github.com/Exiv2/exiv2/pull/1766Patch, Third Party Advisory
https://github.com/Exiv2/exiv2/security/advisories/GHSA-hqjh-hpv8-8r9pPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00004.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FMDT4PJB7P43WSOM3TRQIY3J33BAFVVE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UYGDELIFFJWKUU7SO3QATCIXCZJERGAC/
https://security.gentoo.org/glsa/202312-06
https://github.com/Exiv2/exiv2/pull/1766Patch, Third Party Advisory
https://github.com/Exiv2/exiv2/security/advisories/GHSA-hqjh-hpv8-8r9pPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00004.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FMDT4PJB7P43WSOM3TRQIY3J33BAFVVE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UYGDELIFFJWKUU7SO3QATCIXCZJERGAC/
https://security.gentoo.org/glsa/202312-06

Timeline

Published: Aug 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-34334?

How severe is CVE-2021-34334?

CVE-2021-34334 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.10% probability of exploitation in the next 30 days.

How do I fix CVE-2021-34334?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-34334?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST