CVE-2021-39840

{"containers": {"cna": {"affected": [{"product": "Acrobat Reader", "vendor": "Adobe", "versions": [{"lessThanOrEqual": "DC 2021 July", "status": "affected", "version": "unspecified", "versionType": "custom"}, {"lessThanOrEqual": "20.0-Classic 2021 July", "status": "affected", "version": "unspecified", "versionType": "custom"}, {"lessThanOrEqual": "17.0-Classic 2021 July", "status": "affected", "version": "unspecified", "versionType": "custom"}, {"lessThanOrEqual": "None", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "datePublic": "2021-09-14T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "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 AcroForms 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."}], "metrics": [{"cvssV3_0": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.0"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-416", "description": "Use After Free (CWE-416)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-09-29T15:37:54.000Z", "orgId": "078d4453-3bcd-4900-85e6-15281da43538", "shortName": "adobe"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://helpx.adobe.com/security/products/acrobat/apsb21-55.html"}], "source": {"discovery": "EXTERNAL"}, "title": "Adobe Acrobat Reader DC AcroForm Field Use-After-Free Remote Code Execution Vulnerability", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "psirt@adobe.com", "DATE_PUBLIC": "2021-09-14T23:00:00.000Z", "ID": "CVE-2021-39840", "STATE": "PUBLIC", "TITLE": "Adobe Acrobat Reader DC AcroForm Field Use-After-Free Remote Code Execution Vulnerability"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Acrobat Reader", "version": {"version_data": [{"version_affected": "<=", "version_value": "DC 2021 July"}, {"version_affected": "<=", "version_value": "20.0-Classic 2021 July"}, {"version_affected": "<=", "version_value": "17.0-Classic 2021 July"}, {"version_affected": "<=", "version_value": "None"}]}}]}, "vendor_name": "Adobe"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "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 AcroForms 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."}]}, "impact": {"cvss": {"attackComplexity": "Low", "attackVector": "Local", "availabilityImpact": "High", "baseScore": 7.8, "baseSeverity": "High", "confidentialityImpact": "High", "integrityImpact": "High", "privilegesRequired": "None", "scope": "Unchanged", "userInteraction": "Required", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Use After Free (CWE-416)"}]}]}, "references": {"reference_data": [{"name": "https://helpx.adobe.com/security/products/acrobat/apsb21-55.html", "refsource": "MISC", "url": "https://helpx.adobe.com/security/products/acrobat/apsb21-55.html"}]}, "source": {"discovery": "EXTERNAL"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T02:20:33.379Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://helpx.adobe.com/security/products/acrobat/apsb21-55.html"}]}]}, "cveMetadata": {"assignerOrgId": "078d4453-3bcd-4900-85e6-15281da43538", "assignerShortName": "adobe", "cveId": "CVE-2021-39840", "datePublished": "2021-09-29T15:37:54.224Z", "dateReserved": "2021-08-23T00:00:00.000Z", "dateUpdated": "2024-09-16T20:12:05.250Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"affected": [{"affectedData": [{"product": "Acrobat Reader", "vendor": "Adobe", "versions": [{"lessThanOrEqual": "DC 2021 July", "status": "affected", "version": "unspecified", "versionType": "custom"}, {"lessThanOrEqual": "20.0-Classic 2021 July", "status": "affected", "version": "unspecified", "versionType": "custom"}, {"lessThanOrEqual": "17.0-Classic 2021 July", "status": "affected", "version": "unspecified", "versionType": "custom"}, {"lessThanOrEqual": "None", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "psirt@adobe.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*", "matchCriteriaId": "7CD4CE56-464A-4679-91C3-527DA78BCFAE", "versionEndIncluding": "20.004.30006", "versionStartIncluding": "20.001.30005", "vulnerable": true}, {"criteria": "cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*", "matchCriteriaId": "39B2389A-9FDD-45DC-8CAD-637B8CA265D9", "versionEndIncluding": "20.004.30006", "versionStartIncluding": "20.001.30005", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*", "matchCriteriaId": "B2FC4D9A-C9B4-45DD-9D8D-9FBD8C6DAA83", "versionEndIncluding": "21.005.20058", "versionStartIncluding": "15.008.20082", "vulnerable": true}, {"criteria": "cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*", "matchCriteriaId": "9B149932-7CC5-4CE0-B6A6-D34E140705B0", "versionEndIncluding": "21.005.20058", "versionStartIncluding": "15.008.20082", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*", "matchCriteriaId": "D19D3819-2ED8-48A7-A8A1-0A1AF6A7F1E5", "versionEndIncluding": "21.005.20060", "versionStartIncluding": "15.008.20082", "vulnerable": true}, {"criteria": "cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*", "matchCriteriaId": "C69371A7-DB10-4407-8FD3-7DF99587F0F6", "versionEndIncluding": "21.005.20060", "versionStartIncluding": "15.008.20082", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*", "matchCriteriaId": "81382F25-AF78-476F-B5D5-824A23354FA2", "versionEndIncluding": "17.011.30199", "versionStartIncluding": "17.011.30059", "vulnerable": true}, {"criteria": "cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*", "matchCriteriaId": "8DC875CE-98F6-46A9-A5DE-4E1A24CA1DED", "versionEndIncluding": "17.011.30199", "versionStartIncluding": "17.011.30059", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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 AcroForms 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."}, {"lang": "es", "value": "Acrobat Reader DC versiones 2021.005.20060 (y anteriores), versiones 2020.004.30006 (y anteriores), y versiones 2017.011.30199 (y anteriores), de est\u00e1n afectadas por una vulnerabilidad de uso de memoria previamente liberada cuando se procesa AcroForms que podr\u00eda resultar en una ejecuci\u00f3n de c\u00f3digo arbitrario en el contexto del usuario actual. Es requerida una interacci\u00f3n del usuario para explotar esta vulnerabilidad, ya que el objetivo debe visitar una p\u00e1gina maliciosa o abrir un archivo malicioso"}], "id": "CVE-2021-39840", "lastModified": "2026-06-17T04:04:16.050", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "psirt@adobe.com", "type": "Secondary"}]}, "published": "2021-09-29T16:15:08.753", "references": [{"source": "psirt@adobe.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://helpx.adobe.com/security/products/acrobat/apsb21-55.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://helpx.adobe.com/security/products/acrobat/apsb21-55.html"}], "sourceIdentifier": "psirt@adobe.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "psirt@adobe.com", "type": "Secondary"}]}

{}

{}