CVE-2026-88156

EUVD-2026-99728
Stack-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 61.98%
Affected Products (NVD)
VendorProductVersion
microsoft365_apps
𝑥
< 2609
microsoftoffice
𝑥
< 2609
𝑥
= Vulnerable software versions