{"id":"CVE-2023-36563","published":"2023-10-10T18:15:13Z","modified":"2026-06-17T06:06:32Z","title":"Microsoft WordPad Information Disclosure Vulnerability","vendor":"Microsoft","product":"WordPad","tier":"core","eol":null,"description":{"text":"Microsoft WordPad Information Disclosure Vulnerability","provenance":"source","from":"NVD"},"summary":{"text":"Microsoft WordPad contains an information disclosure flaw in its input handling, classified as improper input validation. An attacker who can get a user to open a crafted document can read sensitive information from the affected system, and the attack requires local access and user interaction, with no authentication needed.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:14:10Z"},"cvss":{"score":5.5,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","provenance":"source","from":"NVD"},"epss":{"score":0.20318,"percentile":0.97477,"date":"2026-10-31","provenance":"source"},"kev":{"dateAdded":"2023-10-10","dueDate":"2023-10-31","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","notes":"https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-36563;  https://nvd.nist.gov/vuln/detail/CVE-2023-36563","provenance":"source"},"vulncheckKev":{"dateAdded":"2023-10-10","exploitedFirstSeen":"2023-10-10","ransomware":false,"evidence":[{"url":"https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2023-Oct","date":"2023-10-10"},{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36563","date":"2023-10-10"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2023-10-10"},{"url":"https://www.microsoft.com/en-us/security/blog/2025/04/09/stopping-attacks-against-on-premises-exchange-server-and-sharepoint-server-with-amsi/","date":"2025-04-09"}],"evidenceTotal":4,"provenance":"source"},"exploited":true,"otx":null,"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36563","tags":["Patch","Vendor Advisory"]},{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36563","tags":["Patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-36563","tags":["US Government Resource"]}],"techniques":[{"id":"T1204.002","name":"Malicious File","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: requires user to open a malicious document","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"Microsoft WordPad Information Disclosure Vulnerability","start":0,"end":54}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1005","name":"Data from Local System","tactics":["collection"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: confidentiality impact exposes local data","mappingType":"primary_impact","evidence":[{"from":"description","quote":"Information Disclosure Vulnerability","start":18,"end":54}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2023-40509","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-40509","exploited":true,"exploitedSince":"2023-10-10","provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1204.002"],"provenance":"ai"},{"stage":"primary","techniques":["T1005"],"provenance":"ai"}],"timeline":[{"date":"2023-10-10","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-36563","provenance":"source"},{"date":"2023-10-10","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2023-Oct","provenance":"source"},{"date":"2023-10-10","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2023-10-10","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-40509","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":0},"priority":{"score":58.3,"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 1118 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.5,"detail":"percentile 0.9748"},{"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":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":3.85,"detail":"base score 5.5"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}