CVE-2026-50647

Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.

• microsoft windows 10 1607 (< 10.0.14393.9339) • microsoft windows 10 1809 (< 10.0.17763.9020) • microsoft windows 10 21h2 (< 10.0.19044.7548) • microsoft windows 10 22h2 (< 10.0.19045.7548) • microsoft windows 11 24h2 (< 10.0.26100.8875) • microsoft windows 11 25h2 (< 10.0.26200.8875) • microsoft windows 11 26h1 (< 10.0.28000.2525) • microsoft windows server 2012 • microsoft windows server 2012 r2 • microsoft windows server 2016 (< 10.0.14393.9339) • microsoft windows server 2019 (< 10.0.17763.9020) • microsoft windows server 2022 (< 10.0.20348.5386) • microsoft windows server 2025 (< 10.0.26100.33158) • microsoft .net framework 4.8.1 • microsoft .net framework 4.8 • microsoft .net framework 4.6.2 • microsoft .net framework 4.7 • microsoft .net framework 4.7.1 • microsoft .net framework 4.7.2 • microsoft .net framework 3.5