SharePoint Archives

Winsage

August 21, 2026

That April Windows update you skipped? Hackers are exploiting it now

Timely updates are crucial for home users to protect personal data and device integrity. Organizations should assess systems for vulnerabilities, especially those accessible via the internet. CVE-2026-33824 is a critical vulnerability in the Internet Key Exchange (IKE) service extensions within Windows, caused by a “double-free” error, allowing code execution. It affects various versions of Windows 10, Windows 11, and Windows Server, and is included in the CISA KEV catalog. Users are urged to install the April Windows updates immediately. CVE-2026-55040 is a critical vulnerability in Microsoft SharePoint that allows unauthenticated attackers to bypass a key security feature, with a CVSS score of 9.1. It affects SharePoint Enterprise Server 2016, SharePoint Server 2019, and the Subscription Edition, with fixed builds already available.

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August 18, 2026

CISA: Windows Task Host flaw now exploited by ransomware gangs

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) confirmed that ransomware gangs are exploiting a significant vulnerability in the Windows Task Host system, tracked as CVE-2025-60710. This high-severity flaw, affecting Windows 11 and Windows Server 2025, allows local attackers with basic user permissions to escalate their privileges to SYSTEM level. Microsoft patched this vulnerability in November 2025, but it poses a threat to unpatched devices. CISA added CVE-2025-60710 to its list of actively exploited vulnerabilities on April 13 and provided Federal Civilian Executive Branch agencies with a two-week window to secure their systems. CISA warns that such vulnerabilities are frequent attack vectors for malicious actors and urges organizations to apply mitigations or discontinue the use of affected products. Additionally, CISA noted that ransomware groups are also exploiting a Microsoft SharePoint remote code execution vulnerability (CVE-2026-45659), confirmed to be actively exploited in early July. Since November 2021, CISA has identified 383 actively exploited vulnerabilities across various Microsoft products, with 112 being used in ransomware attacks.

Winsage

August 14, 2026

August’s Patch Tuesday is a monster: 751 fixes, with an exploited Windows flaw

Users can connect to SMB shares with features like RDMA, leases, and Continuous Availability, allowing efficient data transfer and session management. Hyper-V users can create, checkpoint, and export Generation 2 virtual machines, enable virtual TPM and BitLocker, and connect USB storage and MIDI devices. MSI package management has improved, allowing easy installation, repair, and uninstallation with UAC prompts. TAPI has 11 entries focused on parity fixes, with enhancements in TCP/IP, HTTP.sys, Windows Firewall, Bluetooth, wired 802.1X, and message queuing. Users can verify TAPI line status, HTTP.sys functionality across protocols, and confirm TCP/IP IPsec tunnels. Office updates include client updates for MSI Office 2016 and SharePoint Server updates for 2016, 2019, and Subscription Edition, requiring attention to browser-based editing functionality. On-premises Exchange Server receives a security update addressing seven CVEs, including one critical elevation of privilege vulnerability and six important issues.

Winsage

August 13, 2026

Nightmare Eclipse Drops Windows Zero-Day Exploit ‘ShieldBreak’

Security researcher Nightmare Eclipse has released a zero-day exploit named ShieldBreak that allows privilege escalation on Windows by targeting a vulnerability in Microsoft Defender. This exploit, designated as CVE-2026-50656, is categorized as a race condition vulnerability and affects the latest versions of Windows 11 and Windows Server 2025, with potential impacts on Windows 10. The exploit was disclosed on June 9, 2026, and Microsoft acknowledged the issue on June 16, rolling out fixes by July 9. The mechanics of ShieldBreak involve manipulating Defender’s scan path and executing a scheduled task to gain System-level privileges. Experts have noted differences between ShieldBreak and the previously known RoguePlanet exploit, emphasizing that ShieldBreak requires Defender to be active to function.

Winsage

August 12, 2026

Microsoft fixes 421 bugs and a Windows zero-day in August Patch Tuesday

Microsoft's August Patch Tuesday update addressed 421 vulnerabilities across various products, including multiple versions of Windows (11 25H2/24H2, 11 23H2, and 10). A critical zero-day flaw, the "Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability," allows attackers with lower-level access to gain system privileges without user interaction. Additionally, the update addresses two other zero-day flaws, including the "Windows User Profile Service Elevation of Privilege Vulnerability," which has not yet been exploited but was publicly disclosed. The update is mandatory and should automatically install on supported PCs, with users encouraged to verify its application. The update also includes minor improvements to Windows features, such as enhancements to File Explorer, Windows Hello, Voice Access, and touchpad controls.

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August 11, 2026

Microsoft Patches 398 Flaws Including a Windows Driver Zero-Day Under Active Attack

Microsoft's recent security updates addressed a significant vulnerability, CVE-2026-68820, in a core Windows kernel driver that is being actively exploited, allowing attackers to escalate privileges to SYSTEM level. This vulnerability has a CVSS score of 7.0 and is the only one flagged as under active exploitation. Check Point Research links it to the Lazarus group. Additionally, four other vulnerabilities included in the update do not require victim action: - CVE-2026-62878: A stack-based buffer overflow in Windows DNS Server, considered wormable. - CVE-2026-62893: A remote flaw in Windows Deployment Services through TFTP handling. - CVE-2026-62815: A vulnerability in Microsoft QUIC allowing remote code execution. - CVE-2026-59124: An important flaw in HPC Pack with a CVSS score of 9.8. The updates also finalized a fix for a SharePoint vulnerability chain, with CVE-2026-55040 addressing an authentication bypass and CVE-2026-63520 fixing the code execution component. Organizations are advised to prioritize patching CVE-2026-68820 and then address the other vulnerabilities, ensuring SharePoint installations have both fixes applied.

Winsage

July 29, 2026

A Microsoft outage blocked Windows updates. Now a fix is being tested

On July 23rd, Microsoft experienced widespread outages affecting services such as Azure, Windows Update, and Microsoft 365 applications, which impeded users from installing important Windows 11 updates. In response, Microsoft is enhancing the Windows Update system, focusing on the Windows Update Orchestrator and Arbiter components. These changes are being tested in Windows Insider preview builds 26100.8968 and 26200.8968, which aim to improve update progress calculation and update clean-up logic for better system performance post-update.

Winsage

July 24, 2026

Microsoft shares some details on Azure outage that blocked Windows 11 update downloads

This week, Meta experienced a global outage affecting Facebook users, followed by Microsoft facing performance issues with its M365 services, including Teams and SharePoint. Microsoft also reported difficulties with Azure, impacting Windows 11 updates and the Microsoft Store. The issues began around 11:15 AM PST on July 23, 2026, with a notification to users about the Azure outage affecting Windows Update and related services. Microsoft initiated recovery efforts and by 1:45 PM PST, announced that the issues were resolved and services were restored. Currently, there are no ongoing issues reported on the Microsoft Service Health Status page, but the incident is documented on the Windows Release Health page.

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July 16, 2026

Nightmare Eclipse Drops ‘LegacyHive’ Windows Zero-Day

A security researcher known as Nightmare Eclipse has revealed a new unpatched vulnerability in Windows, named LegacyHive, which is a local privilege escalation flaw in the Windows User Profile Service. This vulnerability allows attackers to access and load user hives of other accounts, including administrators. Nightmare Eclipse has provided proof-of-concept exploit code that works on systems with Microsoft's July 2026 patches. The exploit initially did not require user credentials but now necessitates them for accessing other hives. Nightmare Eclipse has previously disclosed over half a dozen zero-day vulnerabilities affecting Microsoft products. Microsoft has not yet acknowledged the LegacyHive exploit.

Winsage

July 16, 2026

Microsoft’s July patches fix over 600 flaws, shattering last month’s record

Microsoft has released its July 2026 Patch Tuesday updates, addressing 570 new security vulnerabilities, bringing the total for the month to over 620. The cumulative count of vulnerabilities patched this year has reached 1,380, exceeding the total of 1,250 for the entire year of 2020. Over 400 vulnerabilities are related to various versions of Windows, and the Windows 10 Extended Security Update program has been extended until October 12, 2027. Notable vulnerabilities include CVE-2026-56155 in Active Directory Federation Services, which allows attackers to gain administrator rights, and several critical Remote Code Execution vulnerabilities, including CVE-2026-57092 in Hyper-V and CVE-2026-56190 in Remote Desktop Protocol. Microsoft has also patched 97 vulnerabilities in Office products, with 17 classified as critical RCE vulnerabilities, and four vulnerabilities in Exchange Server, including CVE-2026-55008. The latest Microsoft Edge update addresses 27 vulnerabilities related to Chromium, and a vulnerability in Minecraft Bedrock servers has been patched.