CVE-2026-97787High· 7.0▾ TwilightConcurrent execution using shared resource with improper synchronization ('race condition') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 38.5 · likelihood 0 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.2%
Last analysed / modified upstream
0.2% → 0.2%
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
windows_11_23h2 < 10.0.22631.7652windows_11_24h2 < 10.0.26100.9711windows_11_25h2 < 10.0.26200.9711windows_11_26h1 < 10.0.28000.3231windows_11_26h2 < 10.0.26300.9711windows_server_2022 < 10.0.20348.5761windows_server_2025 < 10.0.26100.33650Upgrade past the affected range:
windows_11_23h2 10.0.22631.7652windows_11_24h2 10.0.26100.9711windows_11_25h2 10.0.26200.9711windows_11_26h1 10.0.28000.3231windows_11_26h2 10.0.26300.9711windows_server_2022 10.0.20348.5761windows_server_2025 10.0.26100.33650Connected by shared product, vendor, weakness, or advisory.
CVE-2026-25184High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Applocker Filter Driver (applockerfltr.sys) allows an authorized attacker to elevate privileges locally.
CVE-2026-26181High· 7.8Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
CVE-2026-48572High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows App Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-44800High· 7.8Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
CVE-2026-97830High· 7.5Double free in Windows Internet Information Services allows an unauthorized attacker to deny service over a network.
CVE-2026-97794High· 7.8Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.