CVE-2026-54130
published 2026-06-18CVE-2026-54130: Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.
PriorityP352high7.5CVSS 3.1
AVNACLPRNUINSUCHINAN
EPSS
0.58%
43.2th percentile
Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft_365_copilot | — | — |
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VulDB
Microsoft M365 Copilot missing authentication (EUVD-2026-37946)
vuldb·2026-06-20
CVE-2026-54130 [CRITICAL] Microsoft M365 Copilot missing authentication (EUVD-2026-37946)
A vulnerability categorized as critical has been discovered in Microsoft M365 Copilot. This issue affects some unknown processing. Executing a manipulation can lead to missing authentication.
This vulnerability is registered as CVE-2026-54130. It is possible to launch the attack remotely. No exploit is available.
This product is a managed service, so users do not have direct control over vulnerability countermeasures.
GHSA
Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.
ghsa_unreviewed·2026-06-19
CVE-2026-54130 [CRITICAL] CWE-306 Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-06-18
Published