CVE-2026-55039: Integer Underflow (Wrap or Wraparound)

Integer underflow wrap or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code locally...

CVE-2026-55048: Integer Overflow or Wraparound

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

CVE-2026-55031: Out-of-bounds Read

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally...

CVE-2026-55025: Access of Resource Using Incompatible Type

Access of resource using incompatible type 'type confusion' in Microsoft Office Excel allows an unauthorized attacker to execute code locally...

CVE-2026-55046: Out-of-bounds Read

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally...

CVE-2026-50408: Out-of-bounds Read

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally...

CVE-2026-47642: Use After Free

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally...

CVE-2026-55948: Use After Free

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally...

CVE-2026-55899: Stack-based Buffer Overflow

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

CVE-2026-54988: Out-of-bounds Read

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally...

CVE-2026-50678: Heap-based Buffer Overflow

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to disclose information locally...

PT-2026-58519

Name of the Vulnerable Software and Affected Versions Microsoft Office Excel affected versions not specified Description A use after free issue exists in Microsoft Office Excel. This occurs when an application continues to use a pointer after it has been freed, which can be exploited by an...

PT-2026-58557

Name of the Vulnerable Software and Affected Versions Microsoft Office Excel affected versions not specified Description A heap-based buffer overflow exists in Microsoft Office Excel, which allows an unauthorized attacker to execute code locally. This issue can be triggered when a user opens a...

PT-2026-58558

Name of the Vulnerable Software and Affected Versions Microsoft Office Excel affected versions not specified Description An out-of-bounds read issue exists that allows an unauthorized attacker to disclose information over a network. An out-of-bounds read occurs when the software reads data past t...

PT-2026-58534

Name of the Vulnerable Software and Affected Versions Microsoft Office Excel affected versions not specified Description A heap-based buffer overflow exists in Microsoft Office Excel, which could allow an unauthorized attacker to execute arbitrary code locally. A heap-based buffer overflow occurs...

PT-2026-58529

Name of the Vulnerable Software and Affected Versions Microsoft Office Excel affected versions not specified Description A type confusion issue occurs when a resource is accessed using an incompatible type. This flaw allows an unauthorized attacker to execute arbitrary code locally on the system ...

PT-2026-58542

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

PT-2026-58536

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally...

PT-2026-58545

Name of the Vulnerable Software and Affected Versions Microsoft Office Excel affected versions not specified Description A heap-based buffer overflow exists in Microsoft Office Excel, which could allow an unauthorized attacker to execute arbitrary code locally on the system. This occurs when a us...

PT-2026-58548

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 execute code locally when a user opens a malicious file. Recommendations Apply...