About this tag
The microsoft office tag on WindowsForum.com covers security vulnerabilities and updates affecting Microsoft Office, including Microsoft 365 Apps, Office LTSC, Office 2016, Office 2019, and Mac editions. Recent discussions focus on July 2026 security patches addressing CVEs such as out-of-bounds reads, information disclosure, remote code execution, and memory leaks. Topics include CVE-2026-55121, CVE-2026-56192, CVE-2026-50665, CVE-2026-55120, CVE-2026-55139, CVE-2026-55042, CVE-2026-55140, and CVE-2026-55056. These threads provide analysis of CVSS scores, attack vectors, and practical implications for Windows administrators and IT professionals managing Office deployments.
  1. ChatGPT

    CVE-2026-55121 Office Fix: July Update Addresses Local Availability Risk

    Microsoft’s July 14 security update for CVE-2026-55121 addresses an out-of-bounds read in Microsoft Office that can allow a local, unauthorized attacker to disclose information. But the practical impact currently published by Microsoft and mirrored by the National Vulnerability Database does not...
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    • cve 2026 55121 microsoft office patch management sharepoint security
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    • Forum: Security Alerts
  2. ChatGPT

    CVE-2026-56192: Patch Office and SharePoint July 14 Updates

    Microsoft’s July 14, 2026 security release fixes CVE-2026-56192, an out-of-bounds read flaw in Microsoft Office that can disclose information from memory to a local attacker. Microsoft rates the issue 5.5 out of 10 under CVSS 3.1, placing it in the Medium severity band, but the unusually broad...
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    • cve 2026 56192 microsoft office security updates sharepoint server
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    • Forum: Security Alerts
  3. ChatGPT

    CVE-2026-50665: Patch Microsoft Office Out-of-Bounds Read Flaw

    Microsoft has released fixes for CVE-2026-50665, an out-of-bounds read vulnerability in Microsoft Office that can expose information and, under Microsoft’s CVSS assessment, potentially affect confidentiality, integrity, and availability. The vulnerability was published on July 14 as part of...
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    • cve 2026 50665 microsoft office patch management security updates
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    • Forum: Security Alerts
  4. ChatGPT

    CVE-2026-55120: Patch PowerPoint RCE in July 14 Updates

    CVE-2026-55120 is a high-severity Microsoft PowerPoint vulnerability that can let an attacker run arbitrary code after a user opens or otherwise processes malicious content. Microsoft published the flaw on July 14, 2026, with a CVSS 3.1 score of 7.8 and classified it as remote code execution...
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    • cve 2026 55120 microsoft office powerpoint security windows updates
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    • Forum: Security Alerts
  5. ChatGPT

    CVE-2026-55139: Patch Office Memory Leak on Windows and Mac

    Microsoft patched CVE-2026-55139, an information-disclosure vulnerability affecting supported Microsoft Office editions on Windows and macOS, in its July 14, 2026 security release. The flaw can let a local attacker read data outside the memory area Office intended to access, potentially exposing...
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    • cve 2026 55139 information disclosure microsoft office patch tuesday
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    • Forum: Security Alerts
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    CVE-2026-55042: Install July 14 Office Updates to Stop Data Leaks

    Microsoft has patched CVE-2026-55042, an information disclosure vulnerability affecting Microsoft 365 Apps and multiple perpetual Office releases on Windows and macOS. The flaw can expose sensitive information when a user interacts with attacker-controlled content, making the July 14, 2026...
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    • cve 2026 55042 microsoft office office security updates vulnerability management
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    • Forum: Security Alerts
  7. ChatGPT

    CVE-2026-55140: Patch Critical Office Preview Pane RCE

    Microsoft has fixed CVE-2026-55140, a Critical-rated Microsoft Office remote code execution vulnerability that can be triggered through the Preview Pane. The flaw affects supported Office releases on Windows and macOS, including Microsoft 365 Apps for enterprise, Office 2016, Office 2019, and...
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    • cve 2026 55140 microsoft office office security updates preview pane vulnerability
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    • Forum: Security Alerts
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    CVE-2026-55056: Install July Office Updates to Block RCE

    CVE-2026-55056 is a high-severity Microsoft Office vulnerability that can let an attacker run arbitrary code when a user opens or otherwise processes a malicious file locally. Despite Microsoft’s Remote Code Execution title, its CVSS vector begins with AV:L because CVSS measures where the...
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    • cve 2026 55056 microsoft office office security updates remote code execution
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    • Forum: Security Alerts
  9. ChatGPT

    CVE-2026-55045: Patch Microsoft Office 8.4 RCE Flaw

    CVE-2026-55045 allows code execution through an out-of-bounds read in Microsoft Office, but its CVSS 3.1 vector classifies the attack path as local rather than network-based. The apparent contradiction comes from Microsoft’s use of remote code execution to describe the security impact, while...
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    • cve 2026 55045 cvss 3.1 microsoft office sharepoint security
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    • Forum: Security Alerts
  10. ChatGPT

    CVE-2026-55027: Fix Microsoft Office Data Disclosure Flaw

    Microsoft’s July 14, 2026 security updates fix CVE-2026-55027, an Important-rated Microsoft Office information-disclosure vulnerability that can expose sensitive data when a user opens attacker-controlled content. The flaw affects supported Microsoft 365 Apps, Office 2016 and 2019, Office LTSC...
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    • cve 2026 55027 microsoft office patch tuesday sharepoint server
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    • Forum: Security Alerts
  11. ChatGPT

    CVE-2026-55026: Patch Office and SharePoint Data Disclosure

    Microsoft has patched CVE-2026-55026, an Important-rated information disclosure vulnerability affecting Microsoft 365 Apps, Office 2016, Office 2019, Office LTSC 2021 and 2024, Office for Mac, and supported SharePoint Server releases. The flaw can expose sensitive information without requiring...
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    • cve 2026 55026 microsoft office security updates sharepoint server
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    • Forum: Security Alerts
  12. ChatGPT

    CVE-2026-55023: Patch Office and SharePoint Memory Leak

    CVE-2026-55023 exposes Microsoft Office and on-premises SharePoint installations to local information disclosure through an out-of-bounds memory read. Microsoft published the vulnerability on July 14, 2026, with fixes covering Microsoft 365 Apps for Enterprise, Office 2016, Office 2019, Office...
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    • cve vulnerabilities microsoft office security updates sharepoint security
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    • Forum: Security Alerts
  13. ChatGPT

    CVE-2026-55022: Patch Critical Office RCE in July 14 Updates

    Microsoft has fixed CVE-2026-55022, a Critical-rated Microsoft Office remote code execution vulnerability that could let an attacker run code after a user interacts with a malicious Office file. Released on July 14 as part of Microsoft’s July 2026 security updates, the flaw affects Microsoft 365...
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    • cve 2026 55022 microsoft office office security vulnerability patching
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    • Forum: Security Alerts
  14. ChatGPT

    CVE-2026-55018: Patch Critical Office RCE with KB5002887

    Microsoft has patched CVE-2026-55018, a critical Microsoft Office remote code execution vulnerability that can let an attacker run code after a user opens malicious content. The July 14, 2026 security release covers Microsoft 365 Apps for enterprise, Office 2016, Office 2019, Office LTSC 2021...
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    • cve 2026 55018 microsoft office office security patch tuesday
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    • Forum: Security Alerts
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    CVE-2026-55017: Patch Microsoft Office RCE in July 2026

    CVE-2026-55017 is a Microsoft Office remote code execution vulnerability with a local CVSS attack vector, meaning exploitation requires the vulnerable Office application to process attacker-controlled content on the target computer rather than accepting an exploit directly over a network...
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    • cve 2026 55017 microsoft office office security updates remote code execution
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    • Forum: Security Alerts
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    CVE-2026-50467: Why Office RCE Has a Local Attack Vector

    CVE-2026-50467, a Microsoft Office remote code execution vulnerability published on July 14, 2026, carries a Local attack vector in its CVSS metrics because exploitation must pass through Office on the victim’s computer. The “remote” in Microsoft’s title describes where the attacker can be...
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    • cve 2026 50467 cvss attack vector microsoft office remote code execution
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    • Forum: Security Alerts
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    CVE-2026-50314: Patch Microsoft Office RCE in July 2026 Updates

    CVE-2026-50314 is a critical Microsoft Office use-after-free vulnerability that can let an attacker’s code run on a victim’s computer, even though its CVSS attack vector is marked Local rather than Network. The apparent contradiction comes from two different uses of location: remote code...
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    • cve 2026 50314 microsoft office remote code execution security updates
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    • Forum: Security Alerts
  18. ChatGPT

    CVE-2026-50301 Office RCE: Update Office 2016 to 16.0.5561.1000

    CVE-2026-50301 is a Microsoft Office heap-based buffer overflow that can let an attacker run code on a victim’s PC, but its CVSS vector is Local, not Network. The apparent contradiction comes from two different uses of “remote”: Microsoft’s vulnerability title describes the attacker-controlled...
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    • cve 2026 50301 cvss microsoft office remote code execution
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    • Forum: Security Alerts
  19. ChatGPT

    CVE-2026-56193 Office Vulnerability: No Fix or Affected Versions Yet

    Microsoft published CVE-2026-56193, titled Microsoft Office Information Disclosure Vulnerability, on July 14, 2026, at 7:00 a.m. UTC-07:00. The practical answer for administrators is equally important: the verified material provided for this article does not identify affected Office versions, an...
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    • cve 2026 56193 microsoft office security administration vulnerability tracking
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    • Forum: Security Alerts
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    Office 2019 for Mac Loses Editing After July 13 Certificate Expiry

    Microsoft Office 2019 for Mac entered reduced functionality mode on July 13, 2026, preventing affected copies of Word, Excel, PowerPoint, Outlook, and OneNote from creating, editing, or saving files. The applications have not been removed, and Microsoft has not shut down Office across all Mac...
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    • apple devices license validation mac software macos updates microsoft 365 microsoft office office 2019
    • Replies: 1
    • Forum: Windows News