{"id":"CVE-2021-40726","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-40726","generatedAt":"2026-10-27T20:54:21.974Z","title":"Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a use-after-free vulnerability when processing AcroForm field that could result in arbitrary code execution in the…","description":"Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a use-after-free vulnerability when processing AcroForm field that could result in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.","published":"2021-10-07T16:15:09.000Z","lastModified":"2026-06-17T04:07:20.000Z","status":"Modified","sourceIdentifier":"psirt@adobe.com","cvss":{"version":"3.0","score":7.8,"severity":"HIGH","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-416"],"affected":["adobe/acrobat dc","adobe/acrobat reader dc"],"epss":{"score":0.05285,"percentile":0.92518,"date":"2026-10-26","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 (5.29%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://helpx.adobe.com/security/products/acrobat/apsb21-55.html","tags":["Release Notes","Vendor Advisory"],"source":"psirt@adobe.com"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-1249/","tags":["Third Party Advisory","VDB Entry"],"source":"psirt@adobe.com"},{"url":"https://helpx.adobe.com/security/products/acrobat/apsb21-55.html","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-1249/","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-40726","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."}