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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 143/1469
7.8
CVE-2026-56644

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

7.8
CVE-2026-56643

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

8.8
CVE-2026-56642

Stack-based buffer overflow in Microsoft Fabric Data Warehouse allows an authorized attacker to execute code over a netw

8.8
CVE-2026-56197

Improper neutralization of special elements used in a command ('command injection') in Windows Admin Center allows an au

8.8
CVE-2026-56196

Relative path traversal in Windows Admin Center allows an authorized attacker to execute code over a network.

8.8
CVE-2026-56194

Heap-based buffer overflow in Windows Network File System allows an authorized attacker to elevate privileges over a net

7.8
CVE-2026-56189

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

7.0
CVE-2026-56187

Use after free in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.

8.1
CVE-2026-56186

Out-of-bounds read in Windows Schannel allows an authorized attacker to disclose information over a network.

7.0
CVE-2026-56183

Use after free in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.

7.8
CVE-2026-56182

Integer overflow or wraparound in Windows NTFS allows an authorized attacker to elevate privileges locally.

8.3
CVE-2026-56181

Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker to perform spoofing

7.8
CVE-2026-56176

Out-of-bounds read in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.

7.8
CVE-2026-56175

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

7.0
CVE-2026-56173

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

7.8
CVE-2026-56156

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

7.8
CVE-2026-55949

Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

7.8
CVE-2026-55947

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

7.8
CVE-2026-55141

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

7.8
CVE-2026-55140

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

7.8
CVE-2026-55137

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

7.8
CVE-2026-55136

Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

7.8
CVE-2026-55134

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

7.8
CVE-2026-55133

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

7.8
CVE-2026-55132

Double free in Microsoft Office Word allows an unauthorized attacker to execute code locally.

7.8
CVE-2026-55131

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

7.8
CVE-2026-55130

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

7.8
CVE-2026-55129

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

7.8
CVE-2026-55128

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

7.8
CVE-2026-55127

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

7.3
CVE-2026-55126

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allo

7.8
CVE-2026-55125

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

7.8
CVE-2026-55123

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

7.1
CVE-2026-55122

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

7.8
CVE-2026-55120

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

7.8
CVE-2026-55058

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

7.8
CVE-2026-55056

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

7.8
CVE-2026-55055

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

7.8
CVE-2026-55053

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

8.8
CVE-2026-55052

Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

7.8
CVE-2026-55049

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

7.8
CVE-2026-55048

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

8.4
CVE-2026-55045

Out-of-bounds read in Microsoft Office allows an unauthorized attacker to execute code locally.

7.8
CVE-2026-55044

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

7.8
CVE-2026-55043

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

7.8
CVE-2026-55041

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

7.8
CVE-2026-55039

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

7.8
CVE-2026-55038

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

7.8
CVE-2026-55037

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

7.8
CVE-2026-55036

Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

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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