{"cveID":"CVE-2024-21413","vendorProject":"Microsoft","product":"Office Outlook","vulnerabilityName":"Microsoft Outlook Improper Input Validation Vulnerability","dateAdded":"2025-02-06","shortDescription":"Microsoft Outlook contains an improper input validation vulnerability that allows for remote code execution. Successful exploitation of this vulnerability would allow an attacker to bypass the Office Protected View and open in editing mode rather than protected mode.","requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","dueDate":"2025-02-27","knownRansomwareCampaignUse":"Unknown","notes":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21413 ; https://nvd.nist.gov/vuln/detail/CVE-2024-21413","cwes":["CWE-20"],"year":2024,"state":"mapped","stale_reasons":[],"mappings":[{"domain":"enterprise","cve":"CVE-2024-21413","technique":"T1566.002","technique_name_at_mapping":"Spearphishing Link","mapping_type":"exploitation_technique","capability_group":"feature_bypass","comments":"Attackers can send a specially crafted email that uses the file:// protocol to reference a server that they own, ending the file:// link with an exclamation mark to bypass Outlook's security features, leading to remote code execution.","references":["https://github.com/xaitax/CVE-2024-21413-Microsoft-Outlook-Remote-Code-Execution-Vulnerability"],"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-2024-21413","technique":"T1059","technique_name_at_mapping":"Command and Scripting Interpreter","mapping_type":"primary_impact","capability_group":"feature_bypass","comments":"Attackers can send a specially crafted email that uses the file:// protocol to reference a server that they own, ending the file:// link with an exclamation mark to bypass Outlook's security features, leading to remote code execution.","references":["https://github.com/xaitax/CVE-2024-21413-Microsoft-Outlook-Remote-Code-Execution-Vulnerability"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"}],"techniques":[{"id":"T1059","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Command and Scripting Interpreter","name_at_mapping":"Command and Scripting Interpreter","renamed":false,"revoked_by":null,"mapping_types":["primary_impact"],"sigma_rule_count":95,"has_detection_strategy":true},{"id":"T1566.002","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Spearphishing Link","name_at_mapping":"Spearphishing Link","renamed":false,"revoked_by":null,"mapping_types":["exploitation_technique"],"sigma_rule_count":4,"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"}