CVE-2004-0421

The Portable Network Graphics library (libpng) 1.0.15 and earlier allows attackers to cause a denial of service (crash) via a malformed PNG image file that triggers an error that causes an out-of-bounds read when creating the error message.

Published: 2004-08-18 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2004-0421 is rated Moderate Risk (52.3/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 4.22%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2004-0421

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 3.31% 4.22% +0.91%
2 2026-01-20 1.83% 3.31% +1.48%
3 2025-12-23 — 1.83% —

Full EPSS history (24 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2004-0421

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2004-0421

OS Trackers for CVE-2004-0421

vendor priority summary link
redhat high — https://access.redhat.com/security/cve/CVE-2004-0421
ubuntu medium CVE-2004-0421 medium priority: Ubuntu including 2 source packages (libpng, libpng3), 8 status rows across 4 suites (dapper, edgy, feisty, upstream): released 5, needs-triage 2, DNE 1. https://ubuntu.com/security/CVE-2004-0421

Affected software / configurations for CVE-2004-0421

Vendor Product Version Raw CPE
libpng libpng 1.0.0 cpe:2.3:a:libpng:libpng:1.0.0:*:*:*:*:*:*:*
libpng libpng 1.0.5 cpe:2.3:a:libpng:libpng:1.0.5:*:*:*:*:*:*:*
libpng libpng 1.0.6 cpe:2.3:a:libpng:libpng:1.0.6:*:*:*:*:*:*:*
libpng libpng 1.0.7 cpe:2.3:a:libpng:libpng:1.0.7:*:*:*:*:*:*:*
libpng libpng 1.0.8 cpe:2.3:a:libpng:libpng:1.0.8:*:*:*:*:*:*:*
libpng libpng 1.0.9 cpe:2.3:a:libpng:libpng:1.0.9:*:*:*:*:*:*:*
libpng libpng 1.0.10 cpe:2.3:a:libpng:libpng:1.0.10:*:*:*:*:*:*:*
libpng libpng 1.0.11 cpe:2.3:a:libpng:libpng:1.0.11:*:*:*:*:*:*:*
libpng libpng 1.0.12 cpe:2.3:a:libpng:libpng:1.0.12:*:*:*:*:*:*:*
libpng libpng 1.0.13 cpe:2.3:a:libpng:libpng:1.0.13:*:*:*:*:*:*:*
libpng libpng 1.0.14 cpe:2.3:a:libpng:libpng:1.0.14:*:*:*:*:*:*:*
libpng libpng 1.2.0 cpe:2.3:a:libpng:libpng:1.2.0:*:*:*:*:*:*:*
libpng libpng 1.2.1 cpe:2.3:a:libpng:libpng:1.2.1:*:*:*:*:*:*:*
libpng libpng 1.2.2 cpe:2.3:a:libpng:libpng:1.2.2:*:*:*:*:*:*:*
libpng libpng 1.2.3 cpe:2.3:a:libpng:libpng:1.2.3:*:*:*:*:*:*:*
libpng libpng 1.2.4 cpe:2.3:a:libpng:libpng:1.2.4:*:*:*:*:*:*:*
libpng libpng 1.2.5 cpe:2.3:a:libpng:libpng:1.2.5:*:*:*:*:*:*:*
openpkg openpkg 1.3 cpe:2.3:a:openpkg:openpkg:1.3:*:*:*:*:*:*:*
openpkg openpkg 2.0 cpe:2.3:a:openpkg:openpkg:2.0:*:*:*:*:*:*:*
redhat libpng 1.2.2-16 cpe:2.3:a:redhat:libpng:1.2.2-16:*:*:*:*:*:*:*
redhat libpng 1.2.2-20 cpe:2.3:a:redhat:libpng:1.2.2-20:*:*:*:*:*:*:*
redhat enterprise_linux 2.1 cpe:2.3:o:redhat:enterprise_linux:2.1:*:*:*:*:*:*:*
redhat enterprise_linux 3.0 cpe:2.3:o:redhat:enterprise_linux:3.0:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 3.0 cpe:2.3:o:redhat:enterprise_linux_desktop:3.0:*:*:*:*:*:*:*
trustix secure_linux 2.0 cpe:2.3:o:trustix:secure_linux:2.0:*:*:*:*:*:*:*
trustix secure_linux 2.1 cpe:2.3:o:trustix:secure_linux:2.1:*:*:*:*:*:*:*

References for CVE-2004-0421

URL Tags
http://lists.apple.com/mhonarc/security-announce/msg00056.html Broken Link
http://marc.info/?l=bugtraq&m=108334922320309&w=2 Mailing List
http://marc.info/?l=bugtraq&m=108335030208523&w=2 Mailing List
http://marc.info/?l=fedora-announce-list&m=108451350029261&w=2 Mailing List
http://marc.info/?l=fedora-announce-list&m=108451353608968&w=2 Mailing List
http://secunia.com/advisories/22957 Broken Link
http://secunia.com/advisories/22958 Broken Link
http://www.debian.org/security/2004/dsa-498 Broken Link
http://www.mandriva.com/security/advisories?name=MDKSA-2004:040 Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDKSA-2006:212 Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDKSA-2006:213 Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2004-180.html Broken Link Patch Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2004-181.html Broken Link
http://www.securityfocus.com/bid/10244 Broken Link Patch Third Party Advisory VDB Entry Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/16022 Broken Link VDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11710 Broken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A971 Broken Link
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