CVE-2021-4214

Name: CVE-2021-4214
Creator: NVD / NIST
Published: 2022-08-24T16:15:10.037+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.51%

Last modified Jun 17, 2026

CVE-2021-4214 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A heap overflow flaw was found in libpngs' pngimage.c program. This flaw allows an attacker with local network access to pass a specially crafted PNG file to the pngimage utility, causing an application to crash, leading to a denial of service.. EPSS estimates a 0.51% chance of exploitation in the next 30 days.

Description

A heap overflow flaw was found in libpngs' pngimage.c program. This flaw allows an attacker with local network access to pass a specially crafted PNG file to the pngimage utility, causing an application to crash, leading to a denial of service.

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

0.51%

39.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Libpng	Libpng	1.6.0
Debian	Debian Linux	10.0
Debian	Debian Linux	11.0
Netapp	Ontap Select Deploy Administration Utility	All versions

References

https://access.redhat.com/security/cve/CVE-2021-4214Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2043393Exploit, Issue Tracking, Third Party Advisory
https://github.com/glennrp/libpng/issues/302Exploit, Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2021-4214Third Party Advisory
https://security.netapp.com/advisory/ntap-20221020-0001/Third Party Advisory
https://access.redhat.com/security/cve/CVE-2021-4214Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2043393Exploit, Issue Tracking, Third Party Advisory
https://github.com/glennrp/libpng/issues/302Exploit, Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2021-4214Third Party Advisory
https://security.netapp.com/advisory/ntap-20221020-0001/Third Party Advisory

Timeline

Published: Aug 24, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-4214?

How severe is CVE-2021-4214?

CVE-2021-4214 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4214?

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-2021-4214?

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

Scan your code now

Source: NVD / NIST