Microsoft Windows Server 2012 R2 vulnerabilities
2,562 known vulnerabilities affecting microsoft/windows_server_2012_r2.
Total CVEs
2,562
CISA KEV
96
actively exploited
Public exploits
62
Exploited in wild
82
Severity breakdown
CRITICAL86HIGH1814MEDIUM653LOW9
Vulnerabilities
Page 8 of 129
CVE-2026-21253HIGHCVSS 7.0≥ 6.3.9600.0, < 6.3.9600.230222026-02-10
CVE-2026-21253 [HIGH] CWE-416 CVE-2026-21253: Use after free in Mailslot File System allows an authorized attacker to elevate privileges locally.
Use after free in Mailslot File System allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-21508HIGHCVSS 7.0≥ 6.3.9600.0, < 6.3.9600.230222026-02-10
CVE-2026-21508 [HIGH] CWE-287 CVE-2026-21508: Improper authentication in Windows Storage allows an authorized attacker to elevate privileges local
Improper authentication in Windows Storage allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-21533HIGHCVSS 7.8KEV≥ 6.3.9600.0, < 6.3.9600.230222026-02-10
CVE-2026-21533 [HIGH] CWE-269 CVE-2026-21533: Improper privilege management in Windows Remote Desktop allows an authorized attacker to elevate pri
Improper privilege management in Windows Remote Desktop allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-21246HIGHCVSS 7.8≥ 6.3.9600.0, < 6.3.9600.230222026-02-10
CVE-2026-21246 [HIGH] CWE-122 CVE-2026-21246: Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate
Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-21235HIGHCVSS 7.3≥ 6.3.9600.0, < 6.3.9600.230222026-02-10
CVE-2026-21235 [HIGH] CWE-416 CVE-2026-21235: Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges l
Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-21222MEDIUMCVSS 5.5≥ 6.3.9600.0, < 6.3.9600.230222026-02-10
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 6.2KEV≥ 6.3.9600.0, < 6.3.9600.230222026-02-10
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.
nvd
CVE-2026-21249LOWCVSS 3.3≥ 6.3.9600.0, < 6.3.9600.230222026-02-10
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-2026-20840HIGHCVSS 7.8≥ 6.3.9600.0, < 6.3.9600.229682026-01-13
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.
nvd
CVE-2026-20875HIGHCVSS 7.5≥ 6.3.9600.0, < 6.3.9600.229682026-01-13
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.
nvd
CVE-2026-20869HIGHCVSS 7.0≥ 6.3.9600.0, < 6.3.9600.229682026-01-13
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.
nvd
CVE-2026-20849HIGHCVSS 7.5≥ 6.3.9600.0, < 6.3.9600.229682026-01-13
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.
nvd
CVE-2026-20848HIGHCVSS 7.5≥ 6.3.9600.0, < 6.3.9600.229682026-01-13
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.
nvd
CVE-2026-20843HIGHCVSS 7.8≥ 6.3.9600.0, < 6.3.9600.229682026-01-13
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.
nvd
CVE-2026-20860HIGHCVSS 7.8≥ 6.3.9600.0, < 6.3.9600.229682026-01-13
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.
nvd
CVE-2026-20926HIGHCVSS 7.5≥ 6.3.9600.0, < 6.3.9600.229682026-01-13
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.
nvd
CVE-2026-20816HIGHCVSS 7.0≥ 6.3.9600.0, < 6.3.9600.229682026-01-13
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.
nvd
CVE-2026-20921HIGHCVSS 7.5≥ 6.3.9600.0, < 6.3.9600.229682026-01-13
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.
nvd
CVE-2026-20856HIGHCVSS 8.1≥ 6.3.9600.0, < 6.3.9600.229682026-01-13
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.
nvd
CVE-2026-20922HIGHCVSS 7.8≥ 6.3.9600.0, < 6.3.9600.229682026-01-13
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.
nvd