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CVE WatchOct 15, 2026

CVE-2026-88156

Stack-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.

CVSS

9.8

Critical

EPSS

1.0%

p62

KEV

—

Exploit Today

19

0-100

Published: Oct 13, 2026 · Last modified: Oct 15, 2026 · CWE-121

EPSS · 30d

1.0%EPSS · 30 days1.0%

2026-10-142026-10-21

Technical description

Stack-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.

Official references

msrc.microsoft.comhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88156

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