CVE-2026-42824
MEDIUM
CVSS 6.5
No EPSS data
Description
Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.
CVSS details
EPSS
This CVE is not currently listed in the EPSS dataset.
Show JSON
{
"cve": {
"id": "CVE-2026-42824",
"cveTags": [
{
"tags": [
"exclusively-hosted-service"
],
"sourceIdentifier": "secure@microsoft.com"
}
],
"metrics": {
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{
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},
{
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"version": "2.0.3",
"timestamp": "2026-06-06T17:26:03.554586Z"
}
}
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"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
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"exploitabilityScore": 2.8
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{
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"source": "nvd@nist.gov",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 3.6,
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]
},
"affected": [
{
"source": "secure@microsoft.com",
"affectedData": [
{
"vendor": "Microsoft",
"product": "Microsoft 365 Copilot",
"versions": [
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}
]
}
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}
],
"published": "2026-06-04T23:17:32.077",
"references": [
{
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42824",
"tags": [
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"source": "secure@microsoft.com"
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"weaknesses": [
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"type": "Secondary",
"source": "secure@microsoft.com",
"description": [
{
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"value": "CWE-77"
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"value": "Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network."
}
],
"lastModified": "2026-06-19T21:16:42.893",
"configurations": [
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