Microsoft Office Excel vulnerabilities

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

CVE-2026-54988Medium
An out-of-bounds read vulnerability in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-50678Medium
A heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-50675High
A heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-45469High
Integer underflow (wrap or wraparound) vulnerability in Microsoft Office Excel. An unauthorized attacker can exploit this flaw to execute code locally.
CVE-2026-45459Low
A protection mechanism failure in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.
CVE-2026-45455Low
An out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-44823High
Numeric truncation error vulnerability in Microsoft Office Excel. An unauthorized attacker can exploit this flaw to execute code locally.
CVE-2026-44822High
An out-of-bounds read vulnerability in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
CVE-2026-44820High
Out-of-bounds read vulnerability in Microsoft Office Excel. An unauthorized attacker can exploit this flaw to execute code locally.
CVE-2026-44818High
A race condition in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-44817High
Access of resource using incompatible type ('type confusion') vulnerability in Microsoft Office Excel. An unauthorized attacker can exploit this flaw to execute code locally.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS