CVE-2021-4214

MEDIUM
Published Aug 24, 20223y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Aug 24, 2022 3y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-120
CWE-787 Out-of-bounds Write Memory Safety

Affected Products 4

VendorProductVersionRange
libpnglibpng1.6.0any
debiandebian_linux10.0any
debiandebian_linux11.0any
netappontap_select_deploy_administration_utility*any

References 5

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.