{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-24299", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2026-01-21T21:28:02.969Z", "datePublished": "2026-03-19T21:06:24.955Z", "dateUpdated": "2026-03-19T21:21:10.605Z"}, "containers": {"cna": {"title": "M365 Copilot Information Disclosure Vulnerability", "datePublic": "2026-03-19T14:00:00.000Z", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:*:*:*", "versionStartIncluding": "-"}]}]}], "affected": [{"vendor": "Microsoft", "product": "Microsoft 365 Copilot", "versions": [{"version": "-", "status": "affected"}]}], "descriptions": [{"value": "Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')", "lang": "en-US", "type": "CWE", "cweId": "CWE-77"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-03-19T21:21:10.605Z"}, "references": [{"name": "M365 Copilot Information Disclosure Vulnerability", "tags": ["vendor-advisory", "patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24299"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "baseSeverity": "MEDIUM", "baseScore": 5.3, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C"}}], "tags": ["exclusively-hosted-service"]}}}

{}

{"cveTags": [{"sourceIdentifier": "secure@microsoft.com", "tags": ["exclusively-hosted-service"]}], "descriptions": [{"lang": "en", "value": "Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network."}], "id": "CVE-2026-24299", "lastModified": "2026-03-19T21:17:00.077", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 3.6, "source": "secure@microsoft.com", "type": "Primary"}]}, "published": "2026-03-19T21:17:00.077", "references": [{"source": "secure@microsoft.com", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24299"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-77"}], "source": "secure@microsoft.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Microsoft 365 Copilot", "source": "cna", "vendor": "Microsoft"}, "product": "365_copilot", "vendor": "microsoft"}], "analysis": {"en": {"generated_at": "2026-03-19T22:23:12.027901+00:00", "value": {"mitigation_remediation": ["Verify whether a vendor patch or update is available for Microsoft 365 Copilot and apply it immediately.", "If a patch is unavailable, mitigate exposure by limiting network access to Copilot endpoints to trusted users and networks.", "Continuously monitor official Microsoft advisories and security bulletins for updates or additional mitigations."], "summary": {"action": "Apply Patch", "impact": "Information Disclosure"}, "threat_synthesis": {"affected_systems": "Affected systems include Microsoft 365 Copilot. No specific affected versions are listed in the provided data, so any deployment of the product may potentially be vulnerable unless a patch is applied.", "description_and_impact": "The vulnerability stems from improper neutralization of special elements used in a command (command injection) within Microsoft 365 Copilot. This flaw can allow an unauthorized attacker to disclose sensitive information over a network, constituting an information disclosure attack. The weakness is classified as CWE-77 (Command Injection).", "risk_and_exploitability": "The CVSS score of 5.3 indicates a medium severity vulnerability. The EPSS score is not available, and the vulnerability is not listed in the CISA KEV catalog. While the description does not explicitly state the attack vector, it is inferred that the attack is network-based, requiring remote access to the Copilot service. The lack of an official solution or workaround in the data suggests that a vendor patch is required to mitigate the risk."}}}}, "created": "2026-03-20T08:55:56.777687+00:00", "updated": "2026-03-20T11:06:06.634249+00:00", "vendors": ["microsoft", "microsoft$PRODUCT$365_copilot"]}