{"cveID":"CVE-2021-33739","vendorProject":"Microsoft","product":"Windows","vulnerabilityName":"Microsoft Desktop Window Manager (DWM) Core Library Privilege Escalation Vulnerability","dateAdded":"2021-11-03","shortDescription":"Microsoft Desktop Window Manager (DWM) Core Library contains an unspecified vulnerability that allows for privilege escalation.","requiredAction":"Apply updates per vendor instructions.","dueDate":"2021-11-17","knownRansomwareCampaignUse":"Unknown","notes":"https://nvd.nist.gov/vuln/detail/CVE-2021-33739","cwes":[],"year":2021,"state":"mapped","stale_reasons":[],"mappings":[{"domain":"enterprise","cve":"CVE-2021-33739","technique":"T1598.002","technique_name_at_mapping":"Spearphishing Attachment","mapping_type":"exploitation_technique","capability_group":"priv_escalation","comments":"Local escalation of privilege attack. Attacker would most likely gain access through an executable or script on the local computer sent to the user via an email attachment.","references":["https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-33739"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"},{"domain":"enterprise","cve":"CVE-2021-33739","technique":"T1068","technique_name_at_mapping":"Exploitation for Privilege Escalation","mapping_type":"primary_impact","capability_group":"priv_escalation","comments":"Local escalation of privilege attack. Attacker would most likely gain access through an executable or script on the local computer sent to the user via an email attachment.","references":["https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-33739"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"}],"techniques":[{"id":"T1068","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Exploitation for Privilege Escalation","name_at_mapping":"Exploitation for Privilege Escalation","renamed":false,"revoked_by":null,"mapping_types":["primary_impact"],"sigma_rule_count":31,"has_detection_strategy":true},{"id":"T1598.002","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Spearphishing Attachment","name_at_mapping":"Spearphishing Attachment","renamed":false,"revoked_by":null,"mapping_types":["exploitation_technique"],"sigma_rule_count":1,"has_detection_strategy":true}],"mapping_types":["exploitation_technique","primary_impact"],"has_exploitation_technique":true,"mapping_attack_versions":["16.1"],"mapping_domains":["enterprise"],"sigma_coverage":"full","sigma_rules_tagged_cve":[],"added_after_mapping_snapshot":false,"_source":"kevmap","_built":"2026-08-23 05:47 UTC","_attack_version":"19.2"}