{"id":"CVE-2015-1770","published":"2015-06-10T01:59:36Z","modified":"2026-06-17T00:22:57Z","title":"Microsoft Office Uninitialized Memory Use Vulnerability","vendor":"Microsoft","product":"Office","tier":"core","eol":null,"description":{"text":"Microsoft Office 2013 SP1 and 2013 RT SP1 allows remote attackers to execute arbitrary code via a crafted Office document, aka \"Microsoft Office Uninitialized Memory Use Vulnerability.\"","provenance":"source","from":"NVD"},"summary":{"text":"The flaw is an uninitialized memory use vulnerability in Microsoft Office 2013 SP1 and 2013 RT SP1, in how the Office software handles memory. An attacker can execute arbitrary code by sending a crafted Office document over the network, and the attack requires a user to open that document.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:10:01Z"},"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.34995,"percentile":0.98429,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2022-03-28","dueDate":"2022-04-18","ransomware":false,"requiredAction":"Apply updates per vendor instructions.","notes":"https://nvd.nist.gov/vuln/detail/CVE-2015-1770","provenance":"source"},"vulncheckKev":{"dateAdded":"2018-07-01","exploitedFirstSeen":"2018-07-01","ransomware":false,"evidence":[{"url":"https://nciipc.gov.in/documents/NCIIPC_Newsletter_July18.pdf","date":"2018-07-01"},{"url":"https://www.crowdstrike.com/blog/arrests-put-new-focus-on-carbon-spider-adversary-group/","date":"2018-08-01"},{"url":"https://dl.acm.org/doi/pdf/10.1145/3465481.3465758","date":"2021-08-17"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2022-03-28"}],"evidenceTotal":4,"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-824","name":"Access of Uninitialized Pointer"},{"id":"CWE-19","name":null}],"references":[{"url":"http://www.securityfocus.com/bid/75016","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"http://www.securitytracker.com/id/1032523","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-059","tags":["Patch","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/75016","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"http://www.securitytracker.com/id/1032523","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-059","tags":["Patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-1770","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: user opens malicious document triggers exploit","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"via a crafted Office document","start":92,"end":121}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1059","name":"Command and Scripting Interpreter","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: arbitrary code execution on victim","mappingType":"primary_impact","evidence":[{"from":"description","quote":"allows remote attackers to execute arbitrary code","start":42,"end":91}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[{"id":"SRC-aae333eb08b39b689148","title":"It’s Parliamentary: KeyBoy and the Targeting of the Tibetan Community","publisher":"citizenlab.ca","url":"https://citizenlab.ca/research/parliament-keyboy/","date":null,"mentions":[{"quote":"The researchers describe the presumed existence of an exploit document ‘builder’ designed to selectively weaponize .rtf files using four older, patched, vulnerabilities: CVE-2012-0158, CVE-2012-1856, CVE-2015-1641, and CVE-2015-1770.","start":12042,"end":12275}]},{"id":"SRC-619721166ae9d9d7fdcd","title":"Microsoft Security","publisher":"download.microsoft.com","url":"https://download.microsoft.com/download/4/4/C/44CDEF0E-7924-4787-A56A-16261691ACE3/Microsoft_Security_Intelligence_Report_Volume_19_English.pdf","date":null,"mentions":[{"quote":"CVE-2015-1770 Word OSF Microsoft Word MS15-059","start":98712,"end":98758},{"quote":"53\r\nCVE-2014-0515, 53\r\nCVE-2014-6332, 43, 44, 50\r\nCVE-2014-8439, 46, 53\r\nCVE-2015-0097, 57\r\nCVE-2015-0310, 47\r\nCVE-2015-0311, 46, 47, 53\r\nCVE-2015-0313, 46, 47, 53\r\nCVE-2015-0336, 47, 53\r\nCVE-2015-0359, 47, 53\r\nCVE-2015-1641, 16, 57\r\nCVE-2015-1701, 14, 18, 19, 57\r\nCVE-2015-1769, 57\r\nCVE-2015-1770,","start":238305,"end":238603}]}],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2015-1900","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-1900","exploited":true,"exploitedSince":"2022-03-28","provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1204.002"],"provenance":"ai"},{"stage":"primary","techniques":["T1059"],"provenance":"ai"}],"timeline":[{"date":"2015-06-10","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-1770","provenance":"source"},{"date":"2018-07-01","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://nciipc.gov.in/documents/NCIIPC_Newsletter_July18.pdf","provenance":"source"},{"date":"2022-03-28","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2022-03-28","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-1900","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":2483},"priority":{"score":70.0,"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 3042 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.69,"detail":"percentile 0.9843"},{"name":"Named in threat reports","points":6.13,"detail":"2 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":6.16,"detail":"base score 8.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}