Known vulnerabilities in Windows Server - page 27

Vendor: Microsoft
Software: Windows Server
Software CPE: cpe:2.3:o:microsoft:windows_server:*:*:*:*:*:*:*:*
Website: https://www.microsoft.com
Total vulnerabilities: 6300
Public exploits: 488
Known exploited (KEV): 268
Highest CVSSv4 Score: 9.4

Breakdown by Severity Chart

Severity distribution of vulnerabilities affecting Windows Server Windows Server is affected by 6300 known vulnerabilities: 95 critical, 1270 high, 1244 medium, 3689 low Critical High Medium Low

Vulnerabilities (6300)

Vulnerability CWE-ID CSH Severity Public Exploit KEV First fixed release Published Bulletins
#VU131291 - Use After Free
CVE-2026-40402		 CWE-416 Low
No
No
 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772 13.05.2026 SB2026051302
#VU131282 - Use After Free
CVE-2026-40415		 CWE-416 High
No
No
 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512129
#VU131281 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVE-2026-34351		 CWE-362 Low
No
No
 2012 R2 6.3.9600.23181, 2012 6.2.9200.26079, 2016 10.0.14393.9140, 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512129
#VU131280 - NULL Pointer Dereference
CVE-2026-40414		 CWE-476 Medium
No
No
 2012 R2 6.3.9600.23181, 2012 6.2.9200.26079, 2016 10.0.14393.9140, 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512129
#VU131279 - Stack-based buffer overflow
CVE-2026-40399		 CWE-121 Low
No
No
 2016 10.0.14393.9140, 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512129
#VU131278 - NULL Pointer Dereference
CVE-2026-40405		 CWE-476 Medium
No
No
 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512129
#VU131277 - Use After Free
CVE-2026-40406		 CWE-416 Medium
No
No
 2012 R2 6.3.9600.23181, 2012 6.2.9200.26079, 2016 10.0.14393.9140, 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512129
#VU131276 - NULL Pointer Dereference
CVE-2026-40401		 CWE-476 Low
No
No
 2012 R2 6.3.9600.23181, 2012 6.2.9200.26079, 2016 10.0.14393.9140, 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512129
#VU131275 - NULL Pointer Dereference
CVE-2026-40413		 CWE-476 Medium
No
No
 2012 R2 6.3.9600.23181, 2012 6.2.9200.26079, 2016 10.0.14393.9140, 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512129
#VU131274 - Heap-based Buffer Overflow
CVE-2026-33837		 CWE-122 Low
No
No
 2012 R2 6.3.9600.23181, 2012 6.2.9200.26079, 2016 10.0.14393.9140, 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512129
#VU131273 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVE-2026-34334		 CWE-362 Low
No
No
 2012 R2 6.3.9600.23181, 2012 6.2.9200.26079, 2016 10.0.14393.9140, 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512129
#VU131272 - Use After Free
CVE-2026-35418		 CWE-416 Low
No
No
 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512128
#VU131271 - Use After Free
CVE-2026-33835		 CWE-416 Low
No
No
 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512128
#VU131270 - Use After Free
CVE-2026-34337		 CWE-416 Low
No
No
 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512128
#VU131269 - NULL Pointer Dereference
CVE-2026-34339		 CWE-476 Low
No
No
 2016 10.0.14393.9140, 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512127
#VU131268 - Use After Free
CVE-2026-34340		 CWE-416 Low
No
No
 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512126
#VU131267 - Double Free
CVE-2026-34341		 CWE-415 Low
No
No
 2012 R2 6.3.9600.23181, 2012 6.2.9200.26079, 2016 10.0.14393.9140, 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512125
#VU131266 - Use After Free
CVE-2026-42825		 CWE-416 Low
No
No
 2012 R2 6.3.9600.23181, 2012 6.2.9200.26079, 2016 10.0.14393.9140, 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512124
#VU131265 - Use After Free
CVE-2026-40382		 CWE-416 Low
No
No
 2012 R2 6.3.9600.23181, 2012 6.2.9200.26079, 2016 10.0.14393.9140, 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512124
#VU131264 - Use After Free
CVE-2026-34338		 CWE-416 Low
No
No
 2012 R2 6.3.9600.23181, 2012 6.2.9200.26079, 2016 10.0.14393.9140, 2019 10.0.17763.8755, 2022 23H2 10.0.25398.2330, 2022 10.0.20348.5074, 2022 10.0.20348.5139, 2025 10.0.26100.32772, 2025 10.0.26100.32860 12.05.2026 SB20260512124


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