2026 CVE Vulnerabilities

56,981 CVEs published in 2026.

CVE IDSeverityCVSSDescription
CVE-2026-55944CRITICAL9.8Deserialization of untrusted data in Microsoft Dynamics NAV allows an unauthorized attacker to execute code over a netwo...
CVE-2026-55898HIGH7.1Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-55145HIGH7.1Improper neutralization of special elements used in a command ('command injection') in Outlook Copilot allows an authori...
CVE-2026-55142MEDIUM5.5Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
CVE-2026-55141HIGH7.8Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-55140HIGH7.8Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-55139LOW3.3Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
CVE-2026-55138MEDIUM5.5Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-55137HIGH7.8Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-55136HIGH7.8Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-55135MEDIUM5.4Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allo...
CVE-2026-55134HIGH7.8Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVE-2026-55133HIGH7.8Heap-based buffer overflow in Microsoft Office OneNote allows an unauthorized attacker to execute code locally.
CVE-2026-55132HIGH7.8Double free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVE-2026-55131HIGH7.8Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-55130HIGH7.8Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVE-2026-55129HIGH7.8Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-55128HIGH7.8Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVE-2026-55127HIGH7.8Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVE-2026-55126MEDIUM5.4Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allo...
CVE-2026-55125HIGH7.8Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-55124MEDIUM5.5Improper validation of specified type of input in Microsoft Office Word allows an unauthorized attacker to disclose info...
CVE-2026-55123HIGH7.8Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally.
CVE-2026-55122HIGH7.1Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-55121MEDIUM5.5Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.

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