CVE-2026-40367

high
Published 2026-05-12 ยท Modified 2026-05-21
CVSS v3
8.4
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4 NEW
โ€”
not yet in upstream
VIR risk
8.4

Description

<p>Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.</p>

Predictions

Exploit likelihood
80%
Patch ETA
โ€”

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ€” if you've already worked around this in production โ€” publish your fix to the community-verified tier.

โœš Propose a mitigation on Community โ†’ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

OSVersionStatusFixed in
windows windowsaffected

Application impact

VendorProductVersionsFixed
windows microsoft365_apps-
windows microsoftoffice2019
windows microsoftoffice_long_term_servicing_channel2021
windows microsoftoffice_long_term_servicing_channel2024
windows microsoftsharepoint_server{"endExcluding":"16.0.19725.20280"}16.0.19725.20280
windows microsoftsharepoint_server2016
windows microsoftsharepoint_server2019
windows microsoftword2016

References

CWEs

CWE-822

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.