CVE-2026-81958
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk32th percentile - higher than 32% of all known CVEs
Summary
Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Risk Assessment
The risk involves potential disclosure of sensitive data from Excel files, which could compromise the confidentiality of organizational information.
Recommendation
It is recommended to apply the relevant security updates provided by Microsoft for the Office suite.
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-2026-40359High
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-2026-85875Medium
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
- CVE-2026-81960High
Heap-based buffer overflow in Microsoft Office Excel. Allows an unauthorized attacker to execute code locally.
Original NVD description (English source)
Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS