{
  "threat_severity" : "Important",
  "public_date" : "2026-03-18T00:00:00Z",
  "bugzilla" : {
    "description" : "chromium-browser: Heap buffer overflow in PDFium",
    "id" : "2449392",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2449392"
  },
  "cvss3" : {
    "cvss3_base_score" : "8.8",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
    "status" : "draft"
  },
  "cwe" : "CWE-787",
  "details" : [ "Heap buffer overflow in PDFium in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted PDF file. (Chromium security severity: High)", "A heap buffer overflow flaw was found in the PDFium component of the Chromium browser.\nUpstream bug(s):\nhttps://code.google.com/p/chromium/issues/detail?id=488585504" ],
  "statement" : "Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.",
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-4455\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-4455\nhttps://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_18.html\nhttps://issues.chromium.org/issues/488585504" ],
  "name" : "CVE-2026-4455",
  "csaw" : false
}