PT-2026-70732

Name of the Vulnerable Software and Affected Versions Microsoft Office Excel affected versions not specified Description An out-of-bounds read exists that allows an unauthorized attacker to execute arbitrary code locally or remotely, potentially affecting the system. Recommendations At the moment...

PT-2026-70717

Name of the Vulnerable Software and Affected Versions Microsoft Office Excel affected versions not specified Description Use of an uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to disclose information locally. This issue can enable attackers to obtain sensitive...

PT-2026-70728

Name of the Vulnerable Software and Affected Versions Microsoft Office Excel affected versions not specified Description An untrusted pointer dereference allows an unauthorized attacker to execute arbitrary code locally and remotely, potentially affecting the entire system. A pointer dereference...

PT-2026-70711

Name of the Vulnerable Software and Affected Versions Microsoft Office Excel affected versions not specified Description An out-of-bounds read exists that allows an unauthorized attacker to execute arbitrary code locally or remotely, potentially affecting the system. Recommendations At the moment...

PT-2026-70735

Name of the Vulnerable Software and Affected Versions Microsoft Office Excel 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, potentially overwriting adjacent...

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-2026-70720

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

PT-2026-70734

Name of the Vulnerable Software and Affected Versions Microsoft Office Excel 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...

Security Updates for Microsoft Excel Products (August 2026)

The Microsoft Excel Products are missing a security update. They are, therefore, affected by multiple vulnerabilities: - Access of resource using incompatible type 'type confusion' in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. CVE-2026-65807 -...

CVE-2026-19360

CVE-2026-19360 affects wongcyrus ExcelLexBot (versions up to 0.0.3) via the ExcelLexBotS3TriggerFunction in the Lambda Function Handler. The root cause is improper privilege management, with a remote-compatible attack vector described in the entry. The vulnerability impacts products that are no l...

EUVD-2026-52536

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network...

CVE-2026-62870

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network...

CVE-2026-62870 Microsoft Excel Remote Code Execution Vulnerability

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CVE-2026-62870

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network...

CVE-2026-62870 Microsoft Excel Remote Code Execution Vulnerability

...

CVE-2026-62870

CVE-2026-62870 describes a use-after-free in Microsoft Excel that could allow a remote attacker to execute code over a network. The issue has a high impact (C/H/I/A) with network-based, low-attack-complexity exploitation and requires user interaction. Microsoft has published a security update (KB...

PT-2026-67554

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network...

Microsoft Excel Remote Code Execution Vulnerability

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network...

CVE-2026-59933

PhpSpreadsheet is affected by a memory-exhaustion denial-of-service in the OLERead::read() path when parsing attacker-controlled XLS/OLE metadata. The vulnerability stems from an unguarded sector-chain walk in the OLE reader that can loop indefinitely (self-loop in small-block depot/sector chains...

GHSA-XH5M-36R6-47M3 PHPSpreadsheet: XLS/OLE sector-chain self-loop causes memory exhaustion

Summary PhpSpreadsheet's OLE reader follows sector chains from attacker-controlled XLS/OLE metadata without detecting cycles or enforcing a maximum chain length. A tiny malformed .xls/OLE file can set the small-block depot sector chain to point back to itself. During normal XLS detection,...