{
  "threat_severity" : "Moderate",
  "public_date" : "2025-12-14T04:00:24Z",
  "bugzilla" : {
    "description" : "exim: Exim: Remote heap corruption vulnerability",
    "id" : "2422034",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2422034"
  },
  "cvss3" : {
    "cvss3_base_score" : "8.2",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
    "status" : "draft"
  },
  "cwe" : "CWE-825",
  "details" : [ "Exim before 4.99.1, with certain non-default rate-limit configurations, allows a remote heap-based buffer overflow because database records are cast directly to internal structures without validation.", "A flaw was found in Exim. A remote attacker could exploit a heap corruption vulnerability, which is a type of memory error, to potentially cause the system to crash (Denial of Service) or execute unauthorized code. Further details regarding the exploitation method are expected to be released at a later date." ],
  "statement" : "This vulnerability is rated Moderate as it allows a remote attacker to exploit a heap corruption flaw. This could lead to a denial of service or arbitrary code execution. This issue impacts Exim in Community Projects, including EPEL and Fedora.",
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2025-67896\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-67896\nhttps://exim.org/static/doc/security/\nhttps://www.openwall.com/lists/oss-security/2025/12/11/2" ],
  "name" : "CVE-2025-67896",
  "csaw" : false
}