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    CVE-2008-3964

    Multiple off-by-one errors in libpng before 1.2.32beta01, and 1.4 before 1.4.0beta34, allow context-dependent attackers to cause a denial of service (crash) or have unspecified other impact via a PNG image with crafted zTXt chunks, related to (1) the png_push_read_zTXt function in pngread.c, and possibly related to (2) pngtest.c.

    Published:Sep 5, 2008
    Last Modified:Apr 23, 2026
    EPS:Sep 10, 2008
    EPSS Score:0.01708
    CVSS Score:4.3

    Affected Products

    Vendor
    Libpng
    Product
    Libpng

    Exploits

    http://sourceforge.net/tracker/index.php?func=detail&aid=2095669&group_id=5624&atid=105624http://sourceforge.net/tracker/index.php?func=detail&aid=2095669&group_id=5624&atid=105624

    Common Weakness Enumeration

    CWE-193 Off-by-one Error

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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://secunia.com/advisories/31781
    http://secunia.com/advisories/33137
    http://secunia.com/advisories/35302
    http://secunia.com/advisories/35386
    http://security.gentoo.org/glsa/glsa-200812-15.xml
    http://sourceforge.net/mailarchive/forum.php?thread_name=e56ccc8f0809180317u6a5306fg14683947affb3e1b%40mail.gmail.com&forum_name=png-mng-implement
    http://sourceforge.net/project/shownotes.php?group_id=5624&release_id=624517
    http://sourceforge.net/project/shownotes.php?release_id=624518
    http://sourceforge.net/tracker/index.php?func=detail&aid=2095669&group_id=5624&atid=105624
    http://sunsolve.sun.com/search/document.do?assetkey=1-66-259989-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-77-1020521.1-1
    http://support.avaya.com/elmodocs2/security/ASA-2009-208.htm
    http://www.kb.cert.org/vuls/id/889484
    http://www.mandriva.com/security/advisories?name=MDVSA-2009:051
    http://www.openwall.com/lists/oss-security/2008/09/09/3
    http://www.openwall.com/lists/oss-security/2008/09/09/8
    http://www.securityfocus.com/bid/31049
    http://www.vupen.com/english/advisories/2008/2512
    http://www.vupen.com/english/advisories/2009/1462
    http://www.vupen.com/english/advisories/2009/1560
    https://exchange.xforce.ibmcloud.com/vulnerabilities/44928
    http://secunia.com/advisories/31781
    http://secunia.com/advisories/33137
    http://secunia.com/advisories/35302
    http://secunia.com/advisories/35386
    http://security.gentoo.org/glsa/glsa-200812-15.xml
    http://sourceforge.net/mailarchive/forum.php?thread_name=e56ccc8f0809180317u6a5306fg14683947affb3e1b%40mail.gmail.com&forum_name=png-mng-implement
    http://sourceforge.net/project/shownotes.php?group_id=5624&release_id=624517
    http://sourceforge.net/project/shownotes.php?release_id=624518
    http://sourceforge.net/tracker/index.php?func=detail&aid=2095669&group_id=5624&atid=105624
    http://sunsolve.sun.com/search/document.do?assetkey=1-66-259989-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-77-1020521.1-1
    http://support.avaya.com/elmodocs2/security/ASA-2009-208.htm
    http://www.kb.cert.org/vuls/id/889484
    http://www.mandriva.com/security/advisories?name=MDVSA-2009:051
    http://www.openwall.com/lists/oss-security/2008/09/09/3
    http://www.openwall.com/lists/oss-security/2008/09/09/8
    http://www.securityfocus.com/bid/31049
    http://www.vupen.com/english/advisories/2008/2512
    http://www.vupen.com/english/advisories/2009/1462
    http://www.vupen.com/english/advisories/2009/1560
    https://exchange.xforce.ibmcloud.com/vulnerabilities/44928

    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