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3192 articles · 168074 vulns · 37/41 feeds (7d)
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9.8
CVE-2026-54130EXPLOITEDPATCHED
microsoft · m365 copilot

M365 Copilot Information Disclosure Vulnerability

Description

Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.

Affected Products

VendorProductVersions
microsoftm365 copilot-

Also Affects

Downstream vendors/products affected by this vulnerability

VendorProductSourceConfidence
microsoftmicrosoft 365 copilotcert_advisory90%

References

  • https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54130(vendor-advisory, patch)

Related News (3 articles)

Tier B
BSI Advisories5d ago
[NEU] [hoch] Microsoft 365 Copilot: Mehrere Schwachstellen
→ No new info (linked only)
Tier C
VulDB8d ago
CVE-2026-54130 | Microsoft M365 Copilot missing authentication
→ No new info (linked only)
Tier A
Microsoft MSRC9d ago
CVE-2026-54130 M365 Copilot Information Disclosure Vulnerability
→ No new info (linked only)
CVSS 3.19.8 CRITICAL
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CISA KEV❌ No
Actively exploited✅ Yes
Patch available
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54130
CWECWE-306
PublishedJun 18, 2026
Last enriched5d agov2
Tags
privilege escalationcommand injectiondata manipulation
Trending Score31
Source articles3
Independent3
Info Completeness10/14
Missing: epss, kev, iocs, mitre_attack

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Verification

State: unverified
Confidence: 0%

Vulnerability Timeline

CVE Published
Jun 18, 2026
Discovered by ZDM
Jun 18, 2026
Updated: description, exploitAvailable, activelyExploited, tags
Jun 22, 2026
Actively Exploited
Jun 26, 2026
Exploit Available
Jun 26, 2026
Patch Available
Jun 26, 2026

Version History

v2
Last enriched 5d ago
v2Tier B5d ago

Updated description with new technical details, marked exploit as available, and noted active exploitation along with new tags.

descriptionexploitAvailableactivelyExploitedtags
via BSI Advisories
v19d ago

Initial creation