fkie_cve-2025-65570
Vulnerability from fkie_nvd
Published
2025-12-29 15:16
Modified
2025-12-29 15:57
Severity ?
Summary
A type confusion in jsish 2.0 allows incorrect control flow during execution of the OP_NEXT opcode. When an “instanceof” expression uses an array element access as the left-hand operand inside a for-in loop, the instructions implementation leaves an additional array reference on the stack rather than consuming it during OP_INSTANCEOF. As a result, OP_NEXT interprets the array as an iterator object and reads the iterCmd function pointer from an invalid structure, potentially causing a crash or enabling code execution depending on heap layout.
Impacted products
Vendor Product Version



{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A type confusion in jsish 2.0 allows incorrect control flow during execution of the OP_NEXT opcode. When an \u201cinstanceof\u201d expression uses an array element access as the left-hand operand inside a for-in loop, the instructions implementation leaves an additional array reference on the stack rather than consuming it during OP_INSTANCEOF. As a result, OP_NEXT interprets the array as an iterator object and reads the iterCmd function pointer from an invalid structure, potentially causing a crash or enabling code execution depending on heap layout."
    }
  ],
  "id": "CVE-2025-65570",
  "lastModified": "2025-12-29T15:57:37.560",
  "metrics": {},
  "published": "2025-12-29T15:16:01.763",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "https://blog.mcsky.ro/writeups/2025/11/15/inline8-writeup.html"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Awaiting Analysis"
}


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