{
  "threat_severity" : "Important",
  "public_date" : "2026-02-10T17:04:38Z",
  "bugzilla" : {
    "description" : "libpng: LIBPNG has a heap buffer overflow in png_set_quantize",
    "id" : "2438542",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2438542"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.0",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-125",
  "details" : [ "LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.55, an out-of-bounds read vulnerability exists in the png_set_quantize() API function. When the function is called with no histogram and the number of colors in the palette is more than twice the maximum supported by the user's display, certain palettes will cause the function to enter into an infinite loop that reads past the end of an internal heap-allocated buffer. The images that trigger this vulnerability are valid per the PNG specification. This vulnerability is fixed in 1.6.55.", "A heap based buffer overflow flaw has been discovered in LibPNG. Prior to version 1.6.55, an out-of-bounds read vulnerability exists in the png_set_quantize() API function. When the function is called with no histogram and the number of colors in the palette is more than twice the maximum supported by the user's display, certain palettes will cause the function to enter into an infinite loop that reads past the end of an internal heap-allocated buffer. The images that trigger this vulnerability are valid per the PNG specification." ],
  "statement" : "For `java-17-openjdk-headless` and `java-21-openjdk-headless`, while the affected code is present in the bundled sources, it is not exercised by these headless packages.",
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    "release_date" : "2026-04-22T00:00:00Z",
    "advisory" : "RHSA-2026:9255",
    "cpe" : "cpe:/a:redhat:openjdk_els:11",
    "package" : "java-11-openjdk-portable"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10",
    "release_date" : "2026-03-02T00:00:00Z",
    "advisory" : "RHSA-2026:3551",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10.1",
    "package" : "libpng-2:1.6.40-8.el10_1.2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10.0 Extended Update Support",
    "release_date" : "2026-03-03T00:00:00Z",
    "advisory" : "RHSA-2026:3577",
    "cpe" : "cpe:/o:redhat:enterprise_linux_eus:10.0",
    "package" : "libpng-2:1.6.40-8.el10_0.2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
    "release_date" : "2026-03-17T00:00:00Z",
    "advisory" : "RHSA-2026:4756",
    "cpe" : "cpe:/o:redhat:rhel_els:7",
    "package" : "libpng-2:1.5.13-8.el7_9.2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
    "release_date" : "2026-04-08T00:00:00Z",
    "advisory" : "RHSA-2026:7032",
    "cpe" : "cpe:/o:redhat:rhel_els:7",
    "package" : "libpng12-0:1.2.50-10.el7_9.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-04-02T00:00:00Z",
    "advisory" : "RHSA-2026:6439",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "libpng15-0:1.5.30-8.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-04-02T00:00:00Z",
    "advisory" : "RHSA-2026:6445",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "libpng12-0:1.2.57-6.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-03-11T00:00:00Z",
    "advisory" : "RHSA-2026:4306",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8::crb",
    "package" : "mingw-libpng-0:1.6.34-2.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
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  } ],
  "package_state" : [ {
    "product_name" : "Red Hat build of OpenJDK 17",
    "fix_state" : "Affected",
    "package_name" : "java-17-openjdk-portable",
    "cpe" : "cpe:/a:redhat:openjdk:17"
  }, {
    "product_name" : "Red Hat build of OpenJDK 1.8",
    "fix_state" : "Affected",
    "package_name" : "java-1.8.0-openjdk-portable",
    "cpe" : "cpe:/a:redhat:openjdk:1.8"
  }, {
    "product_name" : "Red Hat build of OpenJDK 21",
    "fix_state" : "Affected",
    "package_name" : "java-21-openjdk-portable",
    "cpe" : "cpe:/a:redhat:openjdk:21"
  }, {
    "product_name" : "Red Hat build of OpenJDK 25",
    "fix_state" : "Affected",
    "package_name" : "java-25-openjdk-portable",
    "cpe" : "cpe:/a:redhat:openjdk:25"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "firefox",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Affected",
    "package_name" : "java-21-openjdk",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Affected",
    "package_name" : "java-25-openjdk",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "thunderbird",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Will not fix",
    "package_name" : "libpng",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "firefox",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "firefox",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Affected",
    "package_name" : "java-17-openjdk",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Affected",
    "package_name" : "java-1.8.0-openjdk",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Affected",
    "package_name" : "java-21-openjdk",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "thunderbird",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "firefox",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "java-17-openjdk",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "java-1.8.0-openjdk",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "java-21-openjdk",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "java-25-openjdk",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Will not fix",
    "package_name" : "thunderbird",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-25646\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-25646\nhttp://www.openwall.com/lists/oss-security/2026/02/09/7\nhttps://github.com/pnggroup/libpng/commit/01d03b8453eb30ade759cd45c707e5a1c7277d88\nhttps://github.com/pnggroup/libpng/security/advisories/GHSA-g8hp-mq4h-rqm3" ],
  "name" : "CVE-2026-25646",
  "mitigation" : {
    "value" : "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
    "lang" : "en:us"
  },
  "csaw" : false
}