Description
Improper neutralization of escape, meta, or control sequences in Copilot allows an unauthorized attacker to disclose information over a network.
Published: 2026-01-22
Score: 7.4 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories

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History

Mon, 02 Feb 2026 13:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:microsoft:365_word_copilot:-:*:*:*:*:*:*:*

Fri, 23 Jan 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 22 Jan 2026 23:00:00 +0000

Type Values Removed Values Added
Description Improper neutralization of escape, meta, or control sequences in Copilot allows an unauthorized attacker to disclose information over a network.
Title Word Copilot Information Disclosure Vulnerability
First Time appeared Microsoft
Microsoft 365 Word Copilot
Weaknesses CWE-150
CPEs cpe:2.3:a:microsoft:365_word_copilot:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft 365 Word Copilot
References
Metrics cvssV3_1

{'score': 7.4, 'vector': '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'}


Subscriptions

Microsoft 365 Word Copilot
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-02-22T17:01:50.400Z

Reserved: 2025-12-30T18:10:54.846Z

Link: CVE-2026-21521

cve-icon Vulnrichment

Updated: 2026-01-23T20:02:10.801Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-22T23:15:57.823

Modified: 2026-02-02T13:30:53.350

Link: CVE-2026-21521

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses