CVE-2026-40359
HighSummary
A use after free vulnerability in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Risk Assessment
This vulnerability could lead to unauthorized access to the system and execution of malicious code, posing a serious threat to the organization's data security.
Recommendation
It is recommended to update Microsoft Office Excel to the latest version to mitigate this vulnerability and to monitor systems for potential attacks.
Other vulnerabilities in Microsoft Office Excel
See all- CVE-2026-40360High
An out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information 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.
Original NVD description (English source)
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.