Microsoft security briefs
3324 published alerts for Microsoft products and services.
Microsoft Office Information Disclosure vulnerability
Microsoft Office Information Disclosure vulnerability (CVE-2026-55057) was added to Microsoft’s security update guidance. Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to disclose information locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Office Remote Code Execution vulnerability
Microsoft Office Remote Code Execution vulnerability (CVE-2026-55056) was added to Microsoft’s security update guidance. Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Word Remote Code Execution vulnerability
Microsoft Word Remote Code Execution vulnerability (CVE-2026-55055) was added to Microsoft’s security update guidance. Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Excel Information Disclosure vulnerability
Microsoft Excel Information Disclosure vulnerability (CVE-2026-55054) was added to Microsoft’s security update guidance. Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network. If you need help checking exposure, call (864) 335-9223.
Microsoft SharePoint Elevation of Privilege vulnerability
Microsoft SharePoint Elevation of Privilege vulnerability (CVE-2026-55052) was added to Microsoft’s security update guidance. Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network. If you need help checking exposure, call (864) 335-9223.
Microsoft SharePoint Server Information Disclosure vulnerability
Microsoft SharePoint Server Information Disclosure vulnerability (CVE-2026-55051) was added to Microsoft’s security update guidance. Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network. If you need help checking exposure, call (864) 335-9223.
Microsoft Office Remote Code Execution vulnerability
Microsoft Office Remote Code Execution vulnerability (CVE-2026-55049) was added to Microsoft’s security update guidance. Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Excel Remote Code Execution vulnerability
Microsoft Excel Remote Code Execution vulnerability (CVE-2026-55048) was added to Microsoft’s security update guidance. Integer overflow or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Office Information Disclosure vulnerability
Microsoft Office Information Disclosure vulnerability (CVE-2026-55047) was added to Microsoft’s security update guidance. Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Excel Information Disclosure vulnerability
Microsoft Excel Information Disclosure vulnerability (CVE-2026-55046) was added to Microsoft’s security update guidance. Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Office Remote Code Execution vulnerability
Microsoft Office Remote Code Execution vulnerability (CVE-2026-55045) was added to Microsoft’s security update guidance. Out-of-bounds read in Microsoft Office allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Excel Remote Code Execution vulnerability
Microsoft Excel Remote Code Execution vulnerability (CVE-2026-55044) was added to Microsoft’s security update guidance. Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft PowerPoint Remote Code Execution vulnerability
Microsoft PowerPoint Remote Code Execution vulnerability (CVE-2026-55043) was added to Microsoft’s security update guidance. Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Office Information Disclosure vulnerability
Microsoft Office Information Disclosure vulnerability (CVE-2026-55042) was added to Microsoft’s security update guidance. Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose information locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Excel Remote Code Execution vulnerability
Microsoft Excel Remote Code Execution vulnerability (CVE-2026-55041) was added to Microsoft’s security update guidance. Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Word Remote Code Execution vulnerability
Microsoft Word Remote Code Execution vulnerability (CVE-2026-55038) was added to Microsoft’s security update guidance. Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Excel Remote Code Execution vulnerability
Microsoft Excel Remote Code Execution vulnerability (CVE-2026-55037) was added to Microsoft’s security update guidance. Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Excel Remote Code Execution vulnerability
Microsoft Excel Remote Code Execution vulnerability (CVE-2026-55036) was added to Microsoft’s security update guidance. Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Office Information Disclosure vulnerability
Microsoft Office Information Disclosure vulnerability (CVE-2026-55035) was added to Microsoft’s security update guidance. Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally. If you need help checking exposure, call (864) 335-9223.
Microsoft SharePoint Server Spoofing vulnerability
Microsoft SharePoint Server Spoofing vulnerability (CVE-2026-55034) was added to Microsoft’s security update guidance. Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network. If you need help checking exposure, call (864) 335-9223.
Microsoft Word Remote Code Execution vulnerability
Microsoft Word Remote Code Execution vulnerability (CVE-2026-55033) was added to Microsoft’s security update guidance. Integer overflow or wraparound in Microsoft Office Word allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Word Remote Code Execution vulnerability
Microsoft Word Remote Code Execution vulnerability (CVE-2026-55032) was added to Microsoft’s security update guidance. Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Excel Remote Code Execution vulnerability
Microsoft Excel Remote Code Execution vulnerability (CVE-2026-55031) was added to Microsoft’s security update guidance. Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft SharePoint Server Spoofing vulnerability
Microsoft SharePoint Server Spoofing vulnerability (CVE-2026-55030) was added to Microsoft’s security update guidance. Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network. If you need help checking exposure, call (864) 335-9223.