CVE-2026-88210 Microsoft Office Word - Authentication Bypass

Microsoft Office Word contains a security feature bypass caused by reliance on untrusted inputs in a security decision, letting unauthorized local attackers bypass security features, exploit requires local access.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.43% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
13 October 2026
Updated
15 October 2026
Weakness
CWE-807

Vendor fix

Update to the latest version of Microsoft Office Word.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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