Cve 2026 55050
The latest Cve 2026 55050 coverage — news, analysis, and updates from the WindowsNews.AI desk.
Microsoft Word Data Leak Flaw Could Aid Attackers – Here’s How to Fix It
Microsoft's July 2026 Patch Tuesday fixes CVE-2026-55142, an Important-rated information disclosure flaw in Word that can leak data via malicious documents. The vulnerability, caused by a numeric truncation error, affects Microsoft 365 Apps, perpetual Office releases, Word 2016, Mac editions, and multiple SharePoint Server versions. Organizations should deploy the updates immediately and verify build numbers, as no workaround is available.
Word RCE Vulnerability (CVE-2026-55134) Patched—But It Requires User Interaction to Exploit
Microsoft's July 2026 security update patches CVE-2026-55134, a high-severity stack buffer overflow in Word that could let attackers execute code by tricking users into opening malicious documents. Although listed as remote code execution, the attack requires local interaction and user opening a file, yet remains a serious risk for anyone running unpatched Office or SharePoint. Users and admins should apply the fixes immediately and bolster endpoint protections to block document-based attacks.
Last Call for SharePoint 2016 and 2019: Microsoft’s Final Patch Seals SSRF Data-Leak Risk
Microsoft's July 14, 2026 security update for SharePoint Server patches CVE-2026-55051, an important SSRF vulnerability, and marks the last scheduled fix for SharePoint 2016 and 2019 as both products exit extended support on the same date. The flaw allows low-privilege attackers to steal sensitive data over a network. IT teams must apply the correct cumulative update, address workflow manager prerequisites, and immediately plan migration away from the now-unsupported older releases.
Patch Alert: Excel Vulnerability CVE-2026-55131 Lets Attackers Hijack PCs Via Simple File Open
Microsoft rolled out July 14, 2026 Office updates that fix a high-severity Excel heap buffer overflow (CVE-2026-55131) allowing remote code execution when a user opens a malicious file. Despite its CVSS local attack vector, the bug is serious because it requires no prior network access or credentials. All Windows and Mac Office editions from Excel 2016 onward need patching, and users should update immediately while exercising caution with untrusted spreadsheets.
SharePoint Admins: July 2026 Cumulative Updates Fix Spoofing XSS — Here’s Your 5-Step Patch Plan
Microsoft's July 2026 SharePoint updates include a fix for CVE-2026-55126, an authenticated cross-site scripting vulnerability that allows low-privilege attackers to spoof content and potentially steal data. This guide covers the affected on-premises editions, deployment prerequisites, and a 5-step patch plan to ensure farms are protected.
Microsoft Patches Excel Heap Overflow (CVE-2026-55053)—Immediate Update Required
Microsoft's July 14, 2026 security update addresses CVE-2026-55053, a heap-based buffer overflow in Excel that can let attackers run code when a user opens a malicious workbook. The fix covers all supported versions, including Windows, Mac, and Office Online Server. Administrators and home users should verify the update is installed immediately, or use mitigations like Protected View until they can patch.
Patch Now: Microsoft Squashes Excel Memory Leak Vulnerability Across Windows, Mac, and Servers
Microsoft's July 14, 2026 security updates include a fix for CVE-2026-55122, a high-severity Excel vulnerability that can leak sensitive memory when a user opens a malicious file. The flaw affects nearly all Office versions on Windows, Mac, and Office Online Server. Administrators must deploy the updates and verify build numbers, as Windows Update alone may not cover all Office installations.
Microsoft Patches Excel Remote Code Flaw CVE-2026-55137—Here’s What You Need to Do Now
Microsoft’s July 14, 2026 security updates fix a heap-based buffer overflow in Excel (CVE-2026-55137) rated Important with a 7.8 CVSS score. A remote attacker can craft a malicious workbook that, when opened, runs arbitrary code with the user’s privileges. The article explains affected products, clarifies the “remote code execution” vs “local attack vector” distinction, and provides step-by-step patching instructions for home users, enterprises, and Mac owners.
Microsoft Word RCE Flaw Patched: Here’s How July’s Office Security Fix Keeps Attackers Out
Microsoft's July 14, 2026 Office security updates fix CVE-2026-55038, a stack-based buffer overflow in Word that can allow remote code execution when a user opens a malicious document. Rated Important with a CVSS 7.8 score, the flaw affects all supported Office versions, Mac editions, and SharePoint servers. While no active exploits are known, the patch is urgent because it closes multiple document-processing vulnerabilities in the same rollout; users and administrators should update immediately and verify build numbers.
Critical Word Double-Free Bug Leaves Millions of PCs and Servers Exposed—July 14 Patch Required
Microsoft's July 14, 2026 security update patches CVE-2026-55132, a high-severity double-free vulnerability in Word that allows remote attackers to execute code simply by convincing a user to open a malicious document. The flaw affects Microsoft 365, Office 2019/2021/2024, and SharePoint servers, and requires immediate patching to prevent full system compromise.
Critical Excel Remote Code Execution Flaw Fixed in Microsoft's July Patch Tuesday
On July 14, 2026, Microsoft released Office security updates that include a fix for CVE-2026-55058, a high-severity remote code execution vulnerability in Excel with a CVSS score of 7.8. The flaw affects nearly all supported Office versions and can be exploited by opening a malicious workbook, potentially allowing attackers to take control of a system. Users and administrators should apply the patch immediately and verify their Office installations are up to date.
Microsoft Fixes Excel Remote Code Execution Flaw (CVE-2026-55037): What You Need to Patch
Microsoft's July 2026 Office updates close CVE-2026-55037, a heap-based buffer overflow in Excel that enables remote code execution when a user opens a malicious workbook. The fix covers Excel 2016, Microsoft 365, Office 2019/2021/2024, and Office Online Server on Windows and Mac, with specific build numbers and the KB5002886 installer update for Excel 2016.
Microsoft Patches a Dangerous Word Code Execution Bug—Here’s How to Protect Your PC
Microsoft’s July 2026 Patch Tuesday delivers a critical fix for CVE-2026-55055, a stack-based buffer overflow in Word that allows code execution when a user opens a malicious document. The vulnerability affects all supported Office editions and several SharePoint server versions, carrying a CVSS 3.1 score of 7.8 with low attack complexity. Users and admins should apply the updates immediately and verify build numbers, as no workarounds exist.