Search/CVE-2026-81947
● CVE — High

CVE-2026-81947

VendormicrosoftProduct365 apps, microsoft 365, office 2016, office 2019, office 2021, office 2024, excel, office online serverDiscoveredSep 8, 2026UpdatedSep 9, 2026

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

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CVSS v3.1
7.8 HIGH
EPSS
0.47%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
Intelligence Reports4
4 intelligence reports available

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EPSS Trend
Sep 10, 2026 → Sep 25, 2026
▲ 0.14pp
0.33% → 0.47% over 3 tracked changes
CVSS v3.1 Detail
Attack VectorLOCAL
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionREQUIRED
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityHIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Connections
9 relationships
Timeline
disclosure → media coverage
Sep 8, 2026
Disclosure — published as a CVE record.