CVE-2026-54131 | BDVDB-2026-348255 Detail

MicrosoftMicrosoft 365 Apps for Enterprise

Description#

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

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

No public exploit known

7.8 High

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 40.6.

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Memory Corruption

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

7.8 High

CVSS:3.1/AV:L/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).