{"id":"CVE-2025-46688","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-46688","generatedAt":"2026-10-28T10:47:22.574Z","title":"quickjs-ng through 0.9.0 has an incorrect size calculation in JS_ReadBigInt for a BigInt, leading to a heap-based buffer overflow.","description":"quickjs-ng through 0.9.0 has an incorrect size calculation in JS_ReadBigInt for a BigInt, leading to a heap-based buffer overflow. QuickJS before 2025-04-26 is also affected.","published":"2025-04-27T20:15:16.000Z","lastModified":"2026-06-17T09:26:49.000Z","status":"Analyzed","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":8.4,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-131"],"affected":["quickjs-ng/quickjs","quickjs project/quickjs"],"epss":{"score":0.00325,"percentile":0.25366,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://bellard.org/quickjs/Changelog","tags":["Product"],"source":"cve@mitre.org"},{"url":"https://github.com/bellard/quickjs/commit/1eb05e44fad89daafa8ee3eb74b8520b4a37ec9a","tags":["Patch"],"source":"cve@mitre.org"},{"url":"https://github.com/bellard/quickjs/issues/399","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/quickjs-ng/quickjs/commit/28fa43d3ddff2c1ba91b6e3a788b2d7ba82d1465","tags":["Patch"],"source":"cve@mitre.org"},{"url":"https://github.com/quickjs-ng/quickjs/issues/1018","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/quickjs-ng/quickjs/pull/1020","tags":["Patch"],"source":"cve@mitre.org"},{"url":"https://github.com/quickjs-ng/quickjs/issues/1018","tags":["Third Party Advisory"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-46688","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}