CVE-2026-20828

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"availabilityImpact": "NONE", "baseScore": 4.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 0.9, "impactScore": 3.6, "source": "secure@microsoft.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20828", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-01-13T19:37:41.694421Z", "version": "2.0.3"}}]}, "published": "2026-01-13T18:16:10.480", "references": [{"source": "secure@microsoft.com", "tags": ["Vendor Advisory"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20828"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "secure@microsoft.com", "type": "Secondary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-04-16T08:33:17.068330+00:00", "value": {"mitigation_remediation": ["Apply the Microsoft security update that addresses CVE\u20112026\u201120828, available through Windows Update or the Microsoft Update Catalog.", "Disable Internet Connection Sharing on systems where the feature is not required, reducing the attack surface.", "Restrict physical access to devices by using lock screens, enforcing screen\u2011lock policies, and, if appropriate, enabling full\u2011disk encryption and device\u2011level access controls."], "summary": {"action": "Apply Patch", "impact": "Information Disclosure via Physical Access"}, "threat_synthesis": {"affected_systems": "Affected systems encompass a broad spectrum of Windows releases, including Windows 10 versions 1607, 1809, 21H2, and 22H2; Windows\u00a011 versions 23H2, 24H2, 25H2, and 22H3; and Windows Server editions ranging from 2008\u202fR2 and 2008\u202fSP2 to 2025. All listed operating systems, both client and server, are susceptible to this flaw.", "description_and_impact": "The vulnerability is an out\u2011of\u2011bounds read in the Windows Internet Connection Sharing (ICS) component of Windows operating systems. An attacker who gains physical access to a device can trigger the flaw to read arbitrary data from memory, potentially exposing sensitive information. This weakness is classified as CWE\u2011125, an out\u2011of\u2011bounds read that can lead to information disclosure.", "risk_and_exploitability": "The CVSS score is 4.6, indicating low severity, and the EPSS score is below 1%, reflecting a very low exploitation probability. The vulnerability is not listed in the CISA KEV catalog, and there are no publicly disclosed exploits. Because the flaw requires physical access to the device, the risk is primarily for environments where an attacker can approach the hardware, such as shared workstations or devices left unattended. Nonetheless, organizations should treat this as an information\u2011disclosure risk that can be mitigated with an update."}}}}, "created": "2026-04-16T08:45:26.255877+00:00", "updated": "2026-04-16T08:45:26.255888+00:00", "vendors": []}