CVE-2026-97790Medium· 5.5▾ SunlitImproper link resolution before file access ('link following') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to perform tampering locally.
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0.1 · exploitation 0
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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
0.4%
Last analysed / modified upstream
0.4% → 0.4%
Improper link resolution before file access ('link following') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to perform tampering locally.
windows_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_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.
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