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Fencer Vulns
medium 5.0

CVE-2004-0421 json

The Portable Network Graphics library (libpng) 1.0.15 and earlier allows attackers to cause a denial of service (crash) via a malformed PNG…

published 2004-05-05 22 y ago modified 2026-06-16 4 mo ago also EUVD-2004-0420

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.1%
EPSS 4.1% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

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.

Patch / fix

  • libpng RHEL 3 2:1.2.2-21
  • libpng10 RHEL 3 1.0.13-12

red hat advisories RHSA-2004:180

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2004-0421 updated

CAN-2004-0421 libpng can access out of bounds memory

  • Red Hat Desktop version 3 libpng 1.2.2-21, libpng10 1.0.13-12 Red Hat Enterprise Linux AS version 3 libpng 1.2.2-21, libpng10 1.0.13-12 Red Hat Enterprise Linux ES version 3 libpng 1.2.2-21, libpng10 1.0.13-12 Red Hat Enterprise Linux WS version 3 libpng 1.2.2-21, libpng10 1.0.13-12
    fixed: vendor fix RHSA-2004:180
  • Red Hat Linux 9
    fixed: vendor fix RHSA-2004:181

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.11% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.