All news with #patch tuesday tag

🔒 Microsoft’s May Patch Tuesday updates address at least 118 security flaws across Windows and other products, including 16 rated critical. This release is notable as the first Patch Tuesday in nearly two years without fixes for known exploited zero-days or previously disclosed vulnerabilities. Other major vendors — Apple, Google, Mozilla and Oracle — have accelerated patch cadences after collaborative AI evaluations. Administrators are advised to apply updates promptly and back up data before upgrading.

🔒 Microsoft released its May 2026 Patch Tuesday update addressing 137 vulnerabilities, of which 31 are rated critical. Microsoft reports no observed active exploitation in the wild, though several critical RCE and local code-execution flaws affect Windows services, Office, Azure, SharePoint, and mobile Office. Talos has published new Snort 2 and Snort 3 rule sets to detect many exploitation attempts and recommends immediate patching and signature updates.

🔒 Microsoft released Windows 11 cumulative updates KB5089549 (25H2/24H2) and KB5087420 (23H2) as the May 2026 Patch Tuesday rollout. The mandatory updates address 120 security vulnerabilities, deliver bug fixes, and introduce features such as desktop Xbox mode, expanded File Explorer archive support, haptic input signals, and Drop Tray. They also improve Windows Hello, taskbar reliability, printing, and add an optional registry control to harden batch-file processing. Install via Settings > Windows Update or the Microsoft Update Catalog.

🔔 Today's May 2026 Patch Tuesday from Microsoft delivers security updates addressing 120 distinct vulnerabilities, including 17 rated Critical. The release corrects multiple remote code execution, elevation-of-privilege, information disclosure, denial-of-service, spoofing, and security feature bypass flaws across Windows, Office, SharePoint, and developer tools. Notable patches close dangerous RCE vectors in Microsoft Office (Word, Excel, PowerPoint) that can be exploited via malicious attachments or the preview pane, and key fixes include Windows GDI EMF parsing, SharePoint server RCE, and a Windows DNS Client RCE. Administrators are strongly advised to prioritize and deploy updates promptly to reduce exposure.

⚠️ Microsoft and CISA have warned that a Windows shell spoofing vulnerability (CVE-2026-32202) is being actively exploited and has prompted a CISA directive requiring federal agencies to patch by May 12. Microsoft says exploitation can expose sensitive data though it does not allow full system takeover. Security experts caution the situation was aggravated by an incomplete earlier fix for CVE-2026-21510, creating a patch gap between vendor updates and organizational deployment. CISOs face a difficult balance between rapid remediation and careful testing to avoid service disruption, and are urged to apply interim mitigations where possible.

⚠ Microsoft confirmed a display bug causing newly introduced Windows security warnings to render incorrectly when opening Remote Desktop (RDP) files. The issue affects all supported Windows releases updated in April 2026 (including Windows 11 KB5083768 & KB5083769, Windows 10 KB5082200, and Windows Server KB5082063) and appears when multiple monitors use different scaling settings, producing overlapping text and misplaced buttons. These dialogs — deployed to warn users about unsigned or unverified RDP files and to show resource redirection settings — can become difficult or impossible to interact with until Microsoft provides a fix.

⚠️After installing the April 2026 Windows security update (KB5082063), some non‑Global Catalog domain controllers configured with Privileged Access Management (PAM) may experience Local Security Authority Subsystem Service (LSASS) crashes during startup. Affected servers can enter repeated reboot loops, disrupting authentication and directory services and potentially rendering domains unavailable. Microsoft is investigating and advises administrators to contact Microsoft Support for Business for mitigation options until a permanent fix is released.

⚠️ Microsoft is investigating reports that the April KB5082063 cumulative security update fails to install on some Windows Server 2025 systems, with affected devices returning 0x800F0983 installation errors. The company says it is monitoring diagnostic telemetry and observed recurring failures after the April 14, 2026 release. A limited number of servers may also boot into BitLocker recovery and request recovery keys, a condition Microsoft says typically affects enterprise-managed configurations. Microsoft is continuing its investigation and will share additional details as they become available.

🔒 April's Patch Tuesday addresses critical vulnerabilities across major vendors. Patches fix a near-critical SQL injection in SAP (CVE-2026-27681) that enables arbitrary database commands, an actively exploited RCE in Adobe Acrobat Reader (CVE-2026-34621), and numerous high-severity Microsoft, Fortinet, and ColdFusion issues. FortiSandbox fixes close authentication-bypass and command-injection holes, while Adobe's ColdFusion updates remediate multiple code execution and path-traversal flaws. Organizations should prioritize vendor updates and apply mitigations where immediate patching is not possible.

🔒 Microsoft released its April Patch Tuesday update addressing an unusually large set of CVEs, including two zero-day flaws. CVE-2026-32201 is being actively exploited and is a SharePoint server spoofing vulnerability that can manipulate how information is presented to users. The second, CVE-2026-33825, is a publicly disclosed elevation-of-privilege bug in Microsoft Defender that could allow system-level access if chained with other exploits. Administrators are urged to prioritise these fixes and also review a high-risk IKEv2 remote code execution issue rated CVSS 9.8.

🛡️ Microsoft released updates addressing 169 vulnerabilities across its product portfolio, including an actively exploited SharePoint spoofing flaw (CVE-2026-32201) and 168 additional issues rated from Low to Critical. The fixes primarily remediate privilege escalation, information disclosure, and remote code execution weaknesses, and include a high-severity IKEv2 RCE (CVE-2026-33824, CVSS 9.8) and a publicly known Microsoft Defender privilege escalation (CVE-2026-33825). Organizations are urged to prioritize patches for actively exploited CVEs and critical RCEs and to follow Microsoft and CISA guidance for mitigations.

🔒 Microsoft’s April Patch Tuesday addresses 167 vulnerabilities, including an actively exploited SharePoint Server zero-day and a critical Windows IKE remote code execution bug. Administrators should prioritize CVE-2026-32201 in SharePoint and the 9.8-rated CVE-2026-33824 in the Windows IKE service. Temporary mitigations—blocking UDP ports 500/4500 or restricting traffic to known peers—reduce risk but do not replace patching. Teams must also apply critical SAP fixes and validate Microsoft Defender and Active Directory protections.

🔒 Microsoft released its April 2026 Patch Tuesday updates addressing 167 security flaws across Windows and related products, including a SharePoint Server zero-day (CVE-2026-32201) and a publicly disclosed Windows Defender privilege escalation dubbed BlueHammer. Google Chrome and Adobe issued emergency fixes for actively exploited zero-days. Administrators should prioritize patches for SharePoint, SQL Server, and Defender and restart browsers to ensure Chromium-based updates are applied.

🔒 Microsoft released its April 2026 Patch Tuesday addressing 165 vulnerabilities across Windows, Office, .NET and server components, including eight rated critical. Critical issues include a .NET DoS (CVE-2026-23666), Remote Desktop and Office use-after-free flaws that can lead to code execution (CVE-2026-32157, CVE-2026-32190), multiple Word local code-execution bugs (CVE-2026-33114, CVE-2026-33115), and an IKEv2 double-free enabling remote code execution (CVE-2026-33824). Talos notes SharePoint vulnerability CVE-2026-32201 is being exploited in the wild and has released Snort rules; administrators should prioritize exposed services and apply mitigations such as blocking UDP 500/4500 if IKE is unused.

🔒 Microsoft released its April 2026 Patch Tuesday addressing 167 vulnerabilities, including two zero-days and eight Critical flaws. The updates patch an actively exploited SharePoint Server spoofing bug (CVE-2026-32201) and a publicly disclosed Microsoft Defender elevation-of-privilege flaw (CVE-2026-33825) that can grant SYSTEM privileges. Multiple Microsoft Office RCEs exploitable via preview panes or malicious documents were fixed; administrators should prioritize installing these patches immediately.

⚠️ Microsoft’s April 2026 Patch Tuesday addresses 164 CVEs, including two zero-days and eight Critical vulnerabilities. The release focuses heavily on elevation-of-privilege flaws (57% of patches) and updates for Windows, Office and developer tools. Notable fixes include an exploited SharePoint spoofing zero-day (CVE-2026-32201), a disclosed Defender elevation-of-privilege issue (CVE-2026-33825), and several high‑risk RCEs; deploy patches promptly and apply recommended mitigations.

⚠️ CISA has ordered U.S. federal agencies to remediate a critical Ivanti Endpoint Manager Mobile flaw (CVE-2026-1340) that has been exploited since January. The agency added the bug to its Known Exploited Vulnerabilities catalog and invoked BOD 22-01, giving agencies until Saturday, April 11 to patch or mitigate affected systems. Ivanti released fixes on January 29 and urged all customers to update immediately.

⚠️ The UK’s NCSC is urging organisations to immediately patch a critical vulnerability in F5 BIG-IP Access Policy Manager (APM) tracked as CVE-2025-53521, which is under active exploitation and can enable remote code execution when an APM access policy is configured on a virtual server. F5 has reclassified the issue from a denial‑of‑service to RCE with a revised CVSS of 9.8 after new information, and CISA has added it to its KEV catalog with a mandated federal patch deadline. Customers should follow F5’s incident‑handling and forensic guidance, isolate or rebuild affected systems, and report suspected compromises to the NCSC.

⚠️ CISA has ordered federal agencies to patch Citrix NetScaler appliances for CVE-2026-3055 by Thursday, April 2, after vendors warned the flaw is being actively exploited. The vulnerability arises from insufficient input validation in ADC and Gateway appliances configured as SAML identity providers and can enable unauthenticated attackers to steal admin session IDs and other sensitive information. Watchtowr reported in-the-wild abuse days after Citrix released fixes on March 23, and CISA has added the issue to its KEV Catalog and invoked BOD 22-01.

⚠️F5 Networks has reclassified a previously patched BIG-IP APM denial-of-service flaw (CVE-2025-53521) as a critical remote code execution vulnerability after evidence of active exploitation. Attackers are deploying webshells on unpatched devices that have access policies configured on virtual servers. F5 and CISA have published advisories and IOCs and are urging immediate patching, forensic checks of disks, logs, and terminal history, and adherence to incident-handling policies.