KLA91209 Multiple vulnerabilities in Microsoft Office

Multiple vulnerabilities were found in Microsoft Office. Malicious users can exploit these vulnerabilities to bypass security restrictions, execute arbitrary code, gain privileges, obtain sensitive information, spoof user interface. Below is a complete list of vulnerabilities: 1. A spoofing...

Description of the security update for Office Online Server: August 11, 2026 (KB5002895)

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PT-2026-70712

Name of the Vulnerable Software and Affected Versions Microsoft Office Excel affected versions not specified Description A heap-based buffer overflow occurs when a program writes more data to a heap memory block than it can hold, potentially corrupting memory. This issue allows an unauthorized...

PT-2026-70653

Name of the Vulnerable Software and Affected Versions Microsoft Office affected versions not specified Description A heap-based buffer overflow occurs when a program writes more data to a heap memory block than it can hold, potentially corrupting memory. This issue allows an unauthorized attacker...

PT-2026-70609

Name of the Vulnerable Software and Affected Versions Microsoft Office affected versions not specified Description An out-of-bounds read allows an unauthorized attacker to locally disclose sensitive information, which can affect the system. Recommendations At the moment, there is no information...

PT-2026-70759

Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally...

PT-2026-70611

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally...

PT-2026-70649

Improper neutralization of special elements used in a command 'command injection' in Microsoft Office allows an unauthorized attacker to execute code locally...

PT-2026-70754

Name of the Vulnerable Software and Affected Versions Microsoft Office affected versions not specified Description Use of an uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose sensitive information locally and affect the system. Recommendations At the moment,...

PT-2026-70618

Name of the Vulnerable Software and Affected Versions Microsoft Office Word affected versions not specified Description A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than the buffer is allocated to hold. This issue allows an unauthorized...

PT-2026-70639

Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to execute code locally...

PT-2026-70615

Name of the Vulnerable Software and Affected Versions Microsoft Office affected versions not specified Description An out-of-bounds read allows an unauthorized attacker to locally disclose sensitive information, which can affect the system. Recommendations At the moment, there is no information...

PT-2026-70656

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally...

PT-2026-70622

Name of the Vulnerable Software and Affected Versions Microsoft Office Word affected versions not specified Description An out-of-bounds read exists in Microsoft Office Word, which allows an unauthorized attacker to disclose sensitive information locally and affect the system. An out-of-bounds re...

PT-2026-70763

Name of the Vulnerable Software and Affected Versions Microsoft Office SharePoint affected versions not specified Description Server-side request forgery SSRF allows an authorized attacker to elevate privileges over a network. SSRF is a flaw where a server is tricked into making requests to an...

PT-2026-70641

Name of the Vulnerable Software and Affected Versions Microsoft Office Access affected versions not specified Description A heap-based buffer overflow occurs when a program writes more data to a heap memory block than it can hold, potentially corrupting memory. This issue allows an unauthorized...

PT-2026-70705

Name of the Vulnerable Software and Affected Versions Microsoft Office Word affected versions not specified Description An off-by-one error occurs when a program writes or reads one element past the end of an array, which can lead to memory corruption or information disclosure. In this case, the...

PT-2026-70750

Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally...

PT-2026-70638

Untrusted pointer dereference in Microsoft Office allows an unauthorized attacker to execute code locally...

Security Updates for Microsoft Office Products (August 2026)

The Microsoft Office Products are missing a security update. They are, therefore, affected by multiple vulnerabilities: - Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally. CVE-2026-63513, CVE-2026-63533, CVE-2026-65661 - Integer overflow or...