Microsoft Office Excel vulnerabilities

79 known CVE vulnerabilities in Microsoft Office Excel, translated and rated.

CVE-2026-40360High
An out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-40359High
A use after free vulnerability in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-20957High
Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-20956High
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-20955High
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-20950High
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-20949High
Improper access control in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.
CVE-2026-20946High
An out-of-bounds read vulnerability in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-70328Medium
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
CVE-2026-70327Medium
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
CVE-2026-70318Medium
Improper input validation in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-68817High
Stack-based buffer overflow in Microsoft Office Excel. An unauthorized attacker can execute code locally.
CVE-2026-68816High
Stack-based buffer overflow in Microsoft Office Excel. An unauthorized attacker can execute code locally.
CVE-2026-68815High
Heap-based buffer overflow in Microsoft Office Excel. An unauthorized attacker can execute code locally.
CVE-2026-68814High
Out-of-bounds read in Microsoft Office Excel. An unauthorized attacker can execute code locally.
CVE-2026-68813Medium
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-68812High
Heap-based buffer overflow in Microsoft Office Excel. An unauthorized attacker can execute code locally.
CVE-2026-68811High
A type confusion vulnerability in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68810High
An untrusted pointer dereference vulnerability in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68808Medium
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-68807High
A heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68806High
An out-of-bounds write in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68805High
A heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68804High
A numeric truncation error in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68803High
A type confusion vulnerability in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68802Medium
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-68801High
A heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68800High
A heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68799Medium
Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-68798High
A heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68797Medium
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-68796High
A heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68795High
A stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68794High
A heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68793High
An out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-65807High
Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
CVE-2026-62870High
A use-after-free vulnerability was found in Microsoft Office Excel that allows an unauthorized attacker to execute code over a network.
CVE-2026-56156High
A heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-55949High
A vulnerability in Microsoft Office Excel is caused by the use of an uninitialized resource, allowing an unauthorized attacker to execute code locally. The issue occurs when processing specially crafted Excel files.
CVE-2026-55947High
A heap-based buffer overflow vulnerability in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-55898Medium
An out-of-bounds read vulnerability in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-55141High
A stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. The vulnerability can be exploited by opening a specially crafted Excel file.
CVE-2026-55138Medium
An untrusted pointer dereference vulnerability in Microsoft Office Excel allows an unauthorized attacker to disclose information locally. The flaw can be exploited to read sensitive data from memory.
CVE-2026-55137High
A heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-55136High
A vulnerability in Microsoft Office Excel allows local code execution through an untrusted pointer dereference. An attacker can exploit this flaw to gain control over the victim's system.
CVE-2026-55131High
A heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-55122High
An out-of-bounds read vulnerability in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-55058High
An out-of-bounds read vulnerability in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-55054Medium
An out-of-bounds read vulnerability in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
CVE-2026-55053High
A heap-based buffer overflow vulnerability in Microsoft Office Excel allows an unauthorized attacker to execute code locally.