CVE-2026-123381 | BDVDB-2026-404593 Detail

MicrosoftMicrosoft 365 Apps for Enterprise

Description#

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

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

No public exploit known

8.8 High

Not available

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Not classified

No specific action is recorded in the source data. Check the references for vendor guidance.

Vulnerable
>= 16.0.1 and < https://aka.ms/OfficeSecurityReleases
Fixed
https://aka.ms/OfficeSecurityReleases

Not available

8.8 High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Not available

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).