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Vulnerability Intelligence

Vulnerability IntelligenceCVE-2026-21521

CVE-2026-21521

HIGH7.4

Word Copilot Information Disclosure Vulnerability

Published Jan 22, 2026

Modified 1 weeks ago

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21521

https://www.cve.org/CVERecord?id=CVE-2026-21521

CVSS Analysis

CVSS v3.1

7.4

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

RequiredUI:R

Scope

Scope

ChangedS:C

Impact

Confidentiality

HighC:H

Integrity

NoneI:N

Availability

NoneA:N

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

Weakness Type (CWE)

Other

Ecosystems

Timeline

PublishedJan 22, 2026

ModifiedFeb 22, 2026

CVE-2026-21521 | Mondoo Vulnerability Intelligence