# CASCA evidence receipt — CVE-2025-24983 - Generation: `gen-409cbd0c74ff4feb70e4944e6b98ce40` - As known: 2026-07-21T08:13:17.697275+00:00 - Comparison: gen-56ccdaf914f7b4be95b689ccae7dc20d - Score policy: public-priority-v1.0.1 - Conflict: not observed in this generation ## Source assertions - **CISA-ADP** (independent_enrichment): container — CISA ADP Vulnrichment - Observed: 2026-07-19T04:27:06.398189+00:00 - Citation: https://www.cve.org/CVERecord?id=CVE-2025-24983 - **microsoft** (original_assertion): container — Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability - Observed: 2026-07-19T04:27:06.398189+00:00 - Citation: https://www.cve.org/CVERecord?id=CVE-2025-24983 - **CISA KEV** (original_assertion): observed_exploitation — Microsoft Windows Win32k Use-After-Free Vulnerability - Observed: 2026-07-19T04:54:04.25158+00:00 - Citation: https://www.cisa.gov/known-exploited-vulnerabilities-catalog - **FIRST EPSS** (original_assertion): model_probability — Probability 0.012980000000; percentile 0.671880000000 - Observed: 2026-07-19T04:54:35.756809+00:00 - Citation: https://www.first.org/epss/data_stats.html ## CVSS assessments - **secure@microsoft.com** (Secondary, CVSS 3.1): 7 — score eligible - Evidence class: exact_record_cna; source rank: 1 - Validation: valid_match - Vector: `CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H` - **microsoft** (unknown, CVSS 3.1): 7 — display only - Evidence class: direct_cve_record_display_only; source rank: not applicable - Validation: display-only direct record assessment - Vector: `CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C` ## Applicability scope - **Microsoft · Windows 10 Version 1507** (direct_source; unknown) - Versions: [{"status": "affected", "version": "10.0.10240.0", "lessThan": "10.0.10240.20947", "versionType": "custom"}] - **Microsoft · Windows 10 Version 1607** (direct_source; unknown) - Versions: [{"status": "affected", "version": "10.0.14393.0", "lessThan": "10.0.14393.7876", "versionType": "custom"}] - **Microsoft · Windows Server 2008 R2 Service Pack 1** (direct_source; unknown) - Versions: [{"status": "affected", "version": "6.1.7601.0", "lessThan": "6.1.7601.27618", "versionType": "custom"}] - **Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)** (direct_source; unknown) - Versions: [{"status": "affected", "version": "6.1.7601.0", "lessThan": "6.1.7601.27618", "versionType": "custom"}] - **Microsoft · Windows Server 2008 Service Pack 2** (direct_source; unknown) - Versions: [{"status": "affected", "version": "6.0.6003.0", "lessThan": "6.0.6003.23168", "versionType": "custom"}] - **Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)** (direct_source; unknown) - Versions: [{"status": "affected", "version": "6.0.6003.0", "lessThan": "6.0.6003.23168", "versionType": "custom"}] - **Microsoft · Windows Server 2012** (direct_source; unknown) - Versions: [{"status": "affected", "version": "6.2.9200.0", "lessThan": "6.2.9200.25368", "versionType": "custom"}] - **Microsoft · Windows Server 2012 R2** (direct_source; unknown) - Versions: [{"status": "affected", "version": "6.3.9600.0", "lessThan": "6.3.9600.22470", "versionType": "custom"}] - **Microsoft · Windows Server 2012 R2 (Server Core installation)** (direct_source; unknown) - Versions: [{"status": "affected", "version": "6.3.9600.0", "lessThan": "6.3.9600.22470", "versionType": "custom"}] - **Microsoft · Windows Server 2012 (Server Core installation)** (direct_source; unknown) - Versions: [{"status": "affected", "version": "6.2.9200.0", "lessThan": "6.2.9200.25368", "versionType": "custom"}] - **Microsoft · Windows Server 2016** (direct_source; unknown) - Versions: [{"status": "affected", "version": "10.0.14393.0", "lessThan": "10.0.14393.7876", "versionType": "custom"}] - **Microsoft · Windows Server 2016 (Server Core installation)** (direct_source; unknown) - Versions: [{"status": "affected", "version": "10.0.14393.0", "lessThan": "10.0.14393.7876", "versionType": "custom"}] - **microsoft · windows_10_1507** (vulnerable_target; supported) - Versions: Any version (unconstrained) (< 10.0.10240.20947) - Canonical identity: `product-9851bd571b8ab08bca589cd73710badfef557d036f0fb7707f694f1c9f597cb4` - Official link states: linked_exact - Criterion (linked_exact, vulnerable_target): `cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:*` - Criterion (linked_exact, vulnerable_target): `cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:*` - **microsoft · windows_10_1607** (vulnerable_target; supported) - Versions: Any version (unconstrained) (< 10.0.14393.7876) - Canonical identity: `product-740fec3e9838b5eabe76ebe27e4d0d7a4cb2e0ef7e13923300d3d0b51e3fce1c` - Official link states: linked_exact - Criterion (linked_exact, vulnerable_target): `cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*` - Criterion (linked_exact, vulnerable_target): `cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*` - **microsoft · windows_server_2008** (vulnerable_target; supported) - Versions: Version not applicable; Version r2 - Canonical identity: `product-217b1ab3d25f361a639824f86753d418b35aa2a816ee370bb71b5d1dd883d87a` - Official link states: linked_exact - Criterion (linked_exact, vulnerable_target): `cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*` - Criterion (linked_exact, vulnerable_target): `cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*` - Criterion (linked_exact, vulnerable_target): `cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*` - **microsoft · windows_server_2012** (vulnerable_target; supported) - Versions: Version not applicable; Version r2 - Canonical identity: `product-5a80416e92fed0cddbb3d4f3840218b448dee11159824ad25a0353da566963fe` - Official link states: linked_exact - Criterion (linked_exact, vulnerable_target): `cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*` - Criterion (linked_exact, vulnerable_target): `cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*` - **microsoft · windows_server_2016** (vulnerable_target; supported) - Versions: Any version (unconstrained) (< 10.0.14393.7876) - Canonical identity: `product-02e254d111ce604757a15650ef469f4f8365d6247da82ce3ac2695c3cfc7dc5f` - Official link states: linked_exact - Criterion (linked_exact, vulnerable_target): `cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*` ## Identity source boundaries - **cpe_dictionary**: 1775266 records through 2026-07-21T06:45:29.809553+00:00 - Run: `27d65b0f-b718-4b4f-bb79-c47c68d09dfa` - **cpe_match**: 643502 records through 2026-07-21T08:13:17.697275+00:00 - Run: `955dae73-7302-438b-aee1-058d7cc5d48e` ## Limitations and unknowns - KEV membership is authoritative for the catalog, not proof of exposure in any environment. - EPSS is a dated model probability and not an individual-environment prediction. - Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown. - NVD-carried upstream facts remain derivative and are not independent corroboration. - Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only. - NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only. - Factor D remains unknown because WC-03 has not converted canonical CPE mappings into generation-bound mapping obligations; canonical identity alone does not score applicability. - Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred. Generated from CASCA normalized evidence. This receipt is not proof that an asset is affected, unaffected, safe, or fixed.