CVE-2026-23667

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{}

{"affected": [{"configurations": [{"platform": ["32-bit_systems", "x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.17763.0,10.0.17763.8511)"}}], "enrichment": {"confidence": 86.0, "confidence_source": "matching", "scores": [{"score": 86.0, "source": "matching"}]}, "original": {"product": "Windows 10 Version 1809", "source": "cna", "vendor": "Microsoft"}, "product": "windows_10_1809", "vendor": "microsoft"}, {"configurations": [{"platform": ["32-bit_systems", "arm64-based_systems", "x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.19044.0,10.0.19044.7058)"}}], "enrichment": {"confidence": 86.0, "confidence_source": "matching", "scores": [{"score": 86.0, "source": "matching"}]}, "original": {"product": "Windows 10 Version 21H2", "source": "cna", "vendor": "Microsoft"}, "product": "windows_10_21h2", "vendor": "microsoft"}, {"configurations": [{"platform": ["32-bit_systems", "arm64-based_systems", "x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.19045.0,10.0.19045.7058)"}}], "enrichment": {"confidence": 86.0, "confidence_source": "matching", "scores": [{"score": 86.0, "source": "matching"}]}, "original": {"product": "Windows 10 Version 22H2", "source": "cna", "vendor": "Microsoft"}, "product": "windows_10_22h2", "vendor": "microsoft"}, {"configurations": [{"platform": ["arm64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.22631.0,10.0.22631.6783)"}}], "enrichment": {"confidence": 86.0, "confidence_source": "matching", "scores": [{"score": 86.0, "source": "matching"}]}, "original": {"product": "Windows 11 version 22H3", "source": "cna", "vendor": "Microsoft"}, "product": "windows_11_22h3", "vendor": "microsoft"}, {"configurations": [{"platform": ["x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.22631.0,10.0.22631.6783)"}}], "enrichment": {"confidence": 86.0, "confidence_source": "matching", "scores": [{"score": 86.0, "source": "matching"}]}, "original": {"product": "Windows 11 Version 23H2", "source": "cna", "vendor": "Microsoft"}, "product": "windows_11_23h2", "vendor": "microsoft"}, {"configurations": [{"platform": ["arm64-based_systems", "x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.26100.0,10.0.26100.8037)"}}], "enrichment": {"confidence": 86.0, "confidence_source": "matching", "scores": [{"score": 86.0, "source": "matching"}]}, "original": {"product": "Windows 11 Version 24H2", "source": "cna", "vendor": "Microsoft"}, "product": "windows_11_24h2", "vendor": "microsoft"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.26200.0,10.0.26200.8037)"}}], "enrichment": {"confidence": 86.0, "confidence_source": "matching", "scores": [{"score": 86.0, "source": "matching"}]}, "original": {"product": "Windows 11 Version 25H2", "source": "cna", "vendor": "Microsoft"}, "product": "windows_11_25h2", "vendor": "microsoft"}, {"configurations": [{"platform": ["arm64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.28000.0,10.0.28000.1719)"}}], "enrichment": {"confidence": 86.0, "confidence_source": "matching", "scores": [{"score": 86.0, "source": "matching"}]}, "original": {"product": "Windows 11 version 26H1", "source": "cna", "vendor": "Microsoft"}, "product": "windows_11_26h1", "vendor": "microsoft"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.28000.0,10.0.28000.1719)"}}], "enrichment": {"confidence": 86.0, "confidence_source": "matching", "scores": [{"score": 86.0, "source": "matching"}]}, "original": {"product": "Windows 11 Version 26H1", "source": "cna", "vendor": "Microsoft"}, "product": "windows_11_26h1", "vendor": "microsoft"}], "analysis": {"en": {"generated_at": "2026-03-28T06:09:28.311135+00:00", "value": {"mitigation_remediation": ["Download and install the official update from Microsoft via the update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23667", "Verify that the Broadcast DVR service is running after the patch", "Monitor system logs for any unexpected privilege escalation activity", "If the patch cannot be applied immediately, isolate the affected machine and restrict local user access to the Broadcast DVR component"], "summary": {"action": "Apply Patch", "impact": "Local Privilege Escalation"}, "threat_synthesis": {"affected_systems": "Microsoft Windows 10 versions 1809, 21H2, and 22H2, and Microsoft Windows 11 versions 23H2, 24H2, 25H2, 22H3, and 26H1 are all affected. The flaw affects all supported architectures, including x86, x64, and ARM64.", "description_and_impact": "A use\u2011after\u2011free flaw in the Broadcast DVR component lets an attacker with legitimate local access run code with higher privileges, bypassing normal security controls and potentially compromising the affected system. The vulnerability enables privilege escalation by exploiting memory corruption after an object has been freed and reallocated. The impact is confined to local accounts; no remote or network injection is required.", "risk_and_exploitability": "The CVSS score of 7 indicates a high severity, but the EPSS probability is reported as less than 1% and the flaw is not included in the CISA Known Exploited Vulnerabilities catalog. The attack requires a locally\u2011authenticated user to invoke the Broadcast DVR service, so exploitation is unlikely to succeed without such access. No widespread exploitation is currently documented, yet the vulnerability remains a serious concern for systems that allow unrestricted local users to interact with the DVR component."}}}}, "created": "2026-03-11T11:46:57.519414+00:00", "updated": "2026-03-29T20:26:37.185986+00:00", "vendors": ["microsoft", "microsoft$PRODUCT$windows_10_1809", "microsoft$PRODUCT$windows_10_21h2", "microsoft$PRODUCT$windows_10_22h2", "microsoft$PRODUCT$windows_11_22h3", "microsoft$PRODUCT$windows_11_23h2", "microsoft$PRODUCT$windows_11_24h2", "microsoft$PRODUCT$windows_11_25h2", "microsoft$PRODUCT$windows_11_26h1"]}