{"cveID":"CVE-2025-21333","vendorProject":"Microsoft","product":"Windows","vulnerabilityName":"Microsoft Windows Hyper-V NT Kernel Integration VSP Heap-based Buffer Overflow Vulnerability","dateAdded":"2025-01-14","shortDescription":"Microsoft Windows Hyper-V NT Kernel Integration VSP contains a heap-based buffer overflow vulnerability that allows a local attacker to gain SYSTEM privileges.","requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","dueDate":"2025-02-04","knownRansomwareCampaignUse":"Unknown","notes":"https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-21333 ; https://nvd.nist.gov/vuln/detail/CVE-2025-21333","cwes":["CWE-122"],"year":2025,"state":"mapped","stale_reasons":[],"mappings":[{"domain":"enterprise","cve":"CVE-2025-21333","technique":"T1068","technique_name_at_mapping":"Exploitation for Privilege Escalation","mapping_type":"exploitation_technique","capability_group":"buffer_overflow","comments":"This vulnerability, if exploited, would allow an adversary to obtain SYSTEM-level privileges, resulting in total system compromise.","references":["https://thehackernews.com/2025/01/3-actively-exploited-zero-day-flaws.html"],"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-2025-21333","technique":"T1003","technique_name_at_mapping":"OS Credential Dumping","mapping_type":"primary_impact","capability_group":"buffer_overflow","comments":"This vulnerability, if exploited, would allow an adversary to obtain SYSTEM-level privileges, resulting in total system compromise.","references":["https://thehackernews.com/2025/01/3-actively-exploited-zero-day-flaws.html"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"}],"techniques":[{"id":"T1003","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"OS Credential Dumping","name_at_mapping":"OS Credential Dumping","renamed":false,"revoked_by":null,"mapping_types":["primary_impact"],"sigma_rule_count":37,"has_detection_strategy":true},{"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":["exploitation_technique"],"sigma_rule_count":31,"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"}