CVE-2026-26109

moderate-risk
Published 2026-03-10

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Do I need to act?

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0.02% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.4/10 High
LOCAL / LOW complexity

Affected Vendors

43
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 0/34 · Minimal
Exposure 17/34 · Moderate