CVE-2026-44820NVD

Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Severity Level

HIGH(7.8)

Published Date

Jun 9, 2026

Last Modified

Jun 9, 2026

Exploitation Status

????

EPSS Score (30-Day)

0.08%Probability

Root Weakness (CWE)

The software reads data past the end, or before the beginning, of the intended buffer.

CVSS v3.1 Base Metrics

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh