CVE-2026-97778
Integer overflow or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Published Oct 13, 2026 · updated Oct 14, 2026 · microsoft 365 apps
Integer overflow or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Timeline
Detection, updates, and resolution for this record.
Oct 13, 2026 · NIST NVD
Detected
Integer overflow or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Oct 14, 2026 · NIST NVD
Updated
Integer overflow or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected
- cpe microsoft/365 appsversion unspecified
- cpe microsoft/microsoft 365version unspecified
- cpe microsoft/office 2021version unspecified
- cpe microsoft/office 2024version unspecified
Sources
- CVE.orgCVE-2026-97778
Official CVE identifier
cve.org - FIRST EPSSCVE-2026-97778
30-day exploitation probability 0.6%
first.org - NIST NVDCVE-2026-97778
Integer overflow or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
nvd.nist.gov