Microsoft Windows Server 2012 vulnerabilities

3,709 known vulnerabilities affecting microsoft/windows_server_2012.

Total CVEs

3,709

CISA KEV

148

actively exploited

Public exploits

269

Exploited in wild

142

Severity breakdown

CRITICAL157HIGH2452MEDIUM1048LOW52

Vulnerabilities

Page 6 of 186

CVE-2026-21222MEDIUMCVSS 5.5vr22026-02-10

CVE-2026-21222 [MEDIUM] CWE-532 CVE-2026-21222: Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to disclose information locally.

nvd

CVE-2026-21525MEDIUMCVSS 6.2KEVvr2≥ 6.2.9200.0, < 6.2.9200.259232026-02-10

CVE-2026-21525 [MEDIUM] CWE-476 CVE-2026-21525: Null pointer dereference in Windows Remote Access Connection Manager allows an unauthorized attacker Null pointer dereference in Windows Remote Access Connection Manager allows an unauthorized attacker to deny service locally.

cvelistv5nvd

CVE-2026-21249LOWCVSS 3.3vr22026-02-10

CVE-2026-21249 [LOW] CWE-73 CVE-2026-21249: External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spo External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing locally.

nvd

CVE-2026-20919HIGHCVSS 7.5vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20919 [HIGH] CWE-362 CVE-2026-20919: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network.

cvelistv5nvd

CVE-2026-20840HIGHCVSS 7.8vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20840 [HIGH] CWE-122 CVE-2026-20840: Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally. Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.

cvelistv5nvd

CVE-2026-20875HIGHCVSS 7.5vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20875 [HIGH] CWE-476 CVE-2026-20875: Null pointer dereference in Windows Local Security Authority Subsystem Service (LSASS) allows an una Null pointer dereference in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network.

cvelistv5nvd

CVE-2026-20816HIGHCVSS 7.0vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20816 [HIGH] CWE-367 CVE-2026-20816: Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker to elevate privileges locally.

cvelistv5nvd

CVE-2026-20869HIGHCVSS 7.0vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20869 [HIGH] CWE-362 CVE-2026-20869: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Local Session Manager (LSM) allows an authorized attacker to elevate privileges locally.

cvelistv5nvd

CVE-2026-20849HIGHCVSS 7.5vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20849 [HIGH] CWE-807 CVE-2026-20849: Reliance on untrusted inputs in a security decision in Windows Kerberos allows an authorized attacke Reliance on untrusted inputs in a security decision in Windows Kerberos allows an authorized attacker to elevate privileges over a network.

cvelistv5nvd

CVE-2026-20848HIGHCVSS 7.5vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20848 [HIGH] CWE-362 CVE-2026-20848: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network.

cvelistv5nvd

CVE-2026-20843HIGHCVSS 7.8vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20843 [HIGH] CWE-284 CVE-2026-20843: Improper access control in Windows Routing and Remote Access Service (RRAS) allows an authorized att Improper access control in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.

cvelistv5nvd

CVE-2026-20860HIGHCVSS 7.8vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20860 [HIGH] CWE-843 CVE-2026-20860: Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver f Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

cvelistv5nvd

CVE-2026-20926HIGHCVSS 7.5vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20926 [HIGH] CWE-362 CVE-2026-20926: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network.

cvelistv5nvd

CVE-2026-20921HIGHCVSS 7.5vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20921 [HIGH] CWE-362 CVE-2026-20921: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network.

cvelistv5nvd

CVE-2026-20940HIGHCVSS 7.8vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20940 [HIGH] CWE-822 CVE-2026-20940: Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker t Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

cvelistv5nvd

CVE-2026-20831HIGHCVSS 7.0vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20831 [HIGH] CWE-367 CVE-2026-20831: Time-of-check time-of-use (toctou) race condition in Windows Ancillary Function Driver for WinSock a Time-of-check time-of-use (toctou) race condition in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

cvelistv5nvd

CVE-2026-20856HIGHCVSS 8.1vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20856 [HIGH] CWE-20 CVE-2026-20856: Improper input validation in Windows Server Update Service allows an unauthorized attacker to execut Improper input validation in Windows Server Update Service allows an unauthorized attacker to execute code over a network.

cvelistv5nvd

CVE-2026-20922HIGHCVSS 7.8vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20922 [HIGH] CWE-122 CVE-2026-20922: Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally. Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.

cvelistv5nvd

CVE-2026-20934HIGHCVSS 7.5vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20934 [HIGH] CWE-362 CVE-2026-20934: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network.

cvelistv5nvd

CVE-2026-20931HIGHCVSS 8.0vr2≥ 6.2.9200.0, < 6.2.9200.258682026-01-13

CVE-2026-20931 [HIGH] CWE-73 CVE-2026-20931: External control of file name or path in Windows Telephony Service allows an authorized attacker to External control of file name or path in Windows Telephony Service allows an authorized attacker to elevate privileges over an adjacent network.

cvelistv5nvd

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