{"id":"CVE-2023-26369","published":"2023-09-13T09:15:13Z","modified":"2026-06-17T05:43:11Z","title":"Adobe Acrobat and Reader Out-of-Bounds Write Vulnerability","vendor":"Adobe","product":"Acrobat and Reader","tier":"core","eol":null,"description":{"text":"Acrobat Reader versions 23.003.20284 (and earlier), 20.005.30516 (and earlier) and 20.005.30514 (and earlier) are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.","provenance":"source","from":"NVD"},"summary":{"text":"Adobe Acrobat and Reader contain an out-of-bounds write vulnerability, an out-of-bounds write flaw (CWE: Out-of-bounds Write) in the product's document handling. An attacker who gets a victim to open a malicious file can achieve arbitrary code execution in the context of the current user, requiring only local access with no privileges but user interaction.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:13:38Z"},"cvss":{"score":7.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.06746,"percentile":0.93946,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2023-09-14","dueDate":"2023-10-05","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","notes":"https://helpx.adobe.com/security/products/acrobat/apsb23-34.html;  https://nvd.nist.gov/vuln/detail/CVE-2023-26369","provenance":"source"},"vulncheckKev":{"dateAdded":"2023-09-12","exploitedFirstSeen":"2023-09-12","ransomware":false,"evidence":[{"url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","date":"2023-09-12"},{"url":"https://helpx.adobe.com/security/products/acrobat/apsb23-34.html","date":"2023-09-12"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-26369","date":"2023-09-13"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2023-09-14"},{"url":"https://googleprojectzero.github.io/0days-in-the-wild/0day-RCAs/2023/CVE-2023-26369.html","date":"2023-10-17"},{"url":"https://ti.qianxin.com/uploads/2024/02/02/dcc93e586f9028c68e7ab34c3326ff31.pdf","date":"2024-02-02"}],"evidenceTotal":6,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"references":[{"url":"https://helpx.adobe.com/security/products/acrobat/apsb23-34.html","tags":["Vendor Advisory"]},{"url":"https://helpx.adobe.com/security/products/acrobat/apsb23-34.html","tags":["Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-26369","tags":["Third Party Advisory","US Government Resource"]}],"techniques":[{"id":"T1204.002","name":"Malicious File","tactics":["execution"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Out-of-Bounds (Read and Write)","mappingType":"exploitation_technique","evidence":[],"comment":"This vulnerability is exploited through a user opening a malicious PDF file. ","confidence":"high"},{"id":"T1203","name":"Exploitation for Client Execution","tactics":["execution"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Out-of-Bounds (Read and Write)","mappingType":"primary_impact","evidence":[],"comment":"This vulnerability is exploited through a user opening a malicious PDF file. ","confidence":"high"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2023-30189","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-30189","exploited":true,"exploitedSince":"2023-09-14","provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1204.002"],"provenance":"source"},{"stage":"primary","techniques":["T1203"],"provenance":"source"}],"timeline":[{"date":"2023-09-12","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","provenance":"source"},{"date":"2023-09-13","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-26369","provenance":"source"},{"date":"2023-09-14","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2023-09-14","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-30189","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":1},"priority":{"score":62.2,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 1143 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":18.79,"detail":"percentile 0.9395"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":5.46,"detail":"base score 7.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-class-adobe-acrobat-reader-cwe-787"}}