Medium 5.5Published Aug 24, 2022

CVE-2021-4214A heap overflow flaw was found in libpngs' pngimage.c program.

Updated under an hour ago (Nov 2, 2026, 1:40 AM ET)

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It affects libpng and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-120, CWE-787
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

libpng libpng libpng:libpng	1.6.0	NVD
debian debian_linux debian:debian_linux	10.0; 11.0	NVD
netapp ontap_select_deploy_administration_utility netapp:ontap_select_deploy_administration_utility	all versions	NVD

References

References

https://access.redhat.com/security/cve/CVE-2021-4214	third-party-advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2043393	exploit, issue-tracking, third-party-advisory
https://github.com/glennrp/libpng/issues/302	exploit, third-party-advisory
https://security-tracker.debian.org/tracker/CVE-2021-4214	third-party-advisory
https://security.netapp.com/advisory/ntap-20221020-0001/	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.