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    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:Apr 29, 2004
    Last Modified:Apr 16, 2026
    EPS:May 5, 2004
    EPSS Score:0.03307
    CVSS Score:5

    Affected Products

    Vendor
    Libpng
    Product
    Libpng
    Vendor
    Openpkg
    Product
    Openpkg
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Libpng
    Vendor
    Redhat
    Product
    Linux
    Vendor
    Trustix
    Product
    Secure Linux

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

    CVE-2026-34757 (CVSS 5.1) — LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network …
    CVE-2026-33636 (CVSS 7.6) — LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network …
    CVE-2026-33416 (CVSS 7.5) — LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network …
    CVE-2026-3713 (CVSS 1.9) — A flaw has been found in pnggroup libpng up to 1.6.55. Affected by this vulnerability is the function do_pnm2p…
    CVE-2026-25646 (CVSS 8.3) — LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network …
    CVE-2025-28162 (CVSS 5.5) — Buffer Overflow vulnerability in libpng 1.6.43-1.6.46 allows a local attacker to cause a denial of service via…
    CVE-2025-28164 (CVSS 5.5) — Buffer Overflow vulnerability in libpng 1.6.43-1.6.46 allows a local attacker to cause a denial of service via…
    CVE-2026-22801 (CVSS 6.8) — LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network …
    CVE-2026-22695 (CVSS 6.1) — LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network …
    CVE-2025-66293 (CVSS 7.1) — LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network …

    References

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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High