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HIGH Severity CVEs

CVSS 7.0 – 8.9

CVSS 7.0–8.9 — serious vulnerabilities that can lead to significant data exposure, privilege escalation, or service disruption

143,102
Total
363
Known Exploited
Showing 73,421 of 143,102 total · Page 148/1469
8.8
CVE-2026-58608

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Print Spooler Com

7.8
CVE-2026-58602

Use after free in Windows Kernel Mode Driver allows an authorized attacker to elevate privileges locally.

7.8
CVE-2026-58601

Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privilege

8.1
CVE-2026-58595

Improper restriction of rendered ui layers or frames in Microsoft Bing App for IOS allows an unauthorized attacker to pe

7.0
CVE-2026-58526

Use after free in Windows Storage allows an authorized attacker to elevate privileges locally.

8.8
CVE-2026-57969

Missing authentication for critical function in Azure CycleCloud allows an authorized attacker to elevate privileges ove

7.8
CVE-2026-57107

Improper authentication in Windows Admin Center allows an authorized attacker to elevate privileges locally.

7.1
CVE-2026-56193

Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.

7.5
CVE-2026-56170

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service ove

8.1
CVE-2026-56169

Improper authentication in Windows Admin Center allows an authorized attacker to elevate privileges over a network.

7.8
CVE-2026-56155 KEV

Insufficient granularity of access control in Active Directory Federation Services (AD FS) allows an authorized attacker

7.8
CVE-2026-55948

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

7.8
CVE-2026-55899

Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

7.1
CVE-2026-55144

Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally.

7.8
CVE-2026-55014

Improper access control in Windows Remote Help Defense allows an authorized attacker to elevate privileges locally.

7.8
CVE-2026-55012

Integer overflow or wraparound in Microsoft Defender allows an unauthorized attacker to execute code locally.

7.8
CVE-2026-55011

Integer underflow (wrap or wraparound) in Microsoft Defender allows an unauthorized attacker to execute code locally.

7.8
CVE-2026-55009

Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to elevate privileges local

7.8
CVE-2026-55006

Insufficient granularity of access control in Microsoft Exchange Server allows an authorized attacker to elevate privile

8.8
CVE-2026-55005

Heap-based buffer overflow in Microsoft Exchange Server allows an authorized attacker to execute code over a network.

7.8
CVE-2026-55004

Double free in Microsoft Printer Drivers allows an authorized attacker to elevate privileges locally.

8.8
CVE-2026-55002

External control of file name or path in SQL Server allows an authorized attacker to elevate privileges over a network.

7.8
CVE-2026-55001

Improper certificate validation in Windows Active Directory allows an authorized attacker to elevate privileges locally.

8.8
CVE-2026-54999

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an

7.0
CVE-2026-54996

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Print Driver

8.1
CVE-2026-54995

Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a ne

7.8
CVE-2026-54993

Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code locally

8.4
CVE-2026-54992

Heap-based buffer overflow in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute code loca

7.8
CVE-2026-54991

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Print Driver

7.0
CVE-2026-54989

Use after free in Quality Windows Audio/Video Experience (QWAVE) service allows an authorized attacker to elevate privil

7.8
CVE-2026-54987

Heap-based buffer overflow in Windows Overlay Filter allows an authorized attacker to elevate privileges locally.

7.8
CVE-2026-54986

Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.

7.5
CVE-2026-54983

Stack-based buffer overflow in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny serv

8.8
CVE-2026-54982

Integer underflow (wrap or wraparound) in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker t

7.2
CVE-2026-54433

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, there is Stored Cross-Site Scripting (XSS) via a crafted plai

7.0
CVE-2026-54129

Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

7.4
CVE-2026-54127

Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.

8.4
CVE-2026-54122

Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code locally.

7.5
CVE-2026-54119

Loop with unreachable exit condition ('infinite loop') in Windows Active Directory allows an unauthorized attacker to de

7.8
CVE-2026-54114

Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.

7.8
CVE-2026-54112

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K allows an

7.0
CVE-2026-54111

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Print Driver

7.8
CVE-2026-54109

Integer overflow or wraparound in Windows Resilient File System (ReFS) allows an authorized attacker to execute code loc

8.8
CVE-2026-54107

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K allows an

7.8
CVE-2026-50697

Exposure of sensitive information to an unauthorized actor in Windows Common Log File System Driver allows an authorized

7.5
CVE-2026-50696

Heap-based buffer overflow in Windows Internet Key Exchange (IKE) Protocol allows an unauthorized attacker to deny servi

7.5
CVE-2026-50695

Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over

8.1
CVE-2026-50694

Use after free in Windows Secure Socket Tunneling Protocol (SSTP) allows an unauthorized attacker to execute code over a

7.8
CVE-2026-50675

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

8.8
CVE-2026-50663

Relative path traversal in Age of Empires II: Definitive Edition Game allows an unauthorized attacker to execute code ov

Frequently Asked Questions

What does HIGH severity mean for CVEs?

CVSS 7.0–8.9 — serious vulnerabilities that can lead to significant data exposure, privilege escalation, or service disruption

How many high severity CVEs exist?

There are 143,102 CVE records rated HIGH in our database. Of these, 363 are listed in CISA's Known Exploited Vulnerabilities catalog.

How should I prioritize high severity vulnerabilities?

HIGH severity vulnerabilities should be patched immediately, especially if they are in the CISA KEV catalog or have a high EPSS score. Use CyberStrike to automatically detect and prioritize these vulnerabilities across your infrastructure.

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