Source: Microsoft · Limited verification•Last verified: •Collection Degraded
CVE-2026-62824Unknown / EvaluatingCritical (raw)CVSS 8.8CWE-121
Remote Desktop Client Remote Code Execution Vulnerability
Published: 11 Aug 2026•Last updated: 11 Aug 2026, 12:30 PM IST•Source identifier: secure@microsoft.com
Dossier completeness: source-provided sections 3 / 3 · rule guidance available. Missing source facts count as incomplete.
CISA KEV catalog
Unknown
KEV status was not determined.
CVSS score
8.8Critical (raw)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Metric sourceMicrosoft MSRC CVRF
EPSS probability
0.8%0.008
Percentile56th
Weakness type
CWE-121
No further CWE recorded
Remediation
Patch status unknown
KB5120418, KB5120386, KB5120385
Why It Matters
Analysis dossierWhy It Matters
Stack-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
SOC priority
High
Actively exploited
No
Publicly disclosed
Unknown
Risk basis: Microsoft or Microsoft-managed product relevance; HIGH severity; No confirmed exploitation signal in current enrichment
Affected Products & Remediation
8 source-backed productsAffected products and versions (source)
- Windows 10 Version 1607 for 32-bit Systems · version range not provided by source · Microsoft MSRC · Source
- Windows 10 Version 1607 for x64-based Systems · version range not provided by source · Microsoft MSRC · Source
- Windows Server 2016 · version range not provided by source · Microsoft MSRC · Source
- Windows Server 2016 (Server Core installation) · version range not provided by source · Microsoft MSRC · Source
- Windows Server 2012 · version range not provided by source · Microsoft MSRC · Source
- Windows Server 2012 (Server Core installation) · version range not provided by source · Microsoft MSRC · Source
- Windows Server 2012 R2 · version range not provided by source · Microsoft MSRC · Source
- Windows Server 2012 R2 (Server Core installation) · version range not provided by source · Microsoft MSRC · Source
Recorded patch / KBKB5120418, KB5120386, KB5120385
Vendor or catalog guidance (source)
- Microsoft MSRC: Install the security update KB5120418 listed by MSRC
- Microsoft MSRC: Install the security update KB5120386 listed by MSRC
- Microsoft MSRC: Install the security update KB5120385 listed by MSRC
Known exploitation (source facts)
Only what a source states. Unknown means no source has said either way; it is not "not exploited".
- CISA KEV
- Unknown
- Exploited (source statement)
- No
- Publicly disclosed (source)
- Unknown
Suggested hunting (rule-based inference)
SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.
Matched microsoft-enterprise (Affected product: Windows 10 Version 1607 for 32-bit Systems, Vendor: Microsoft); user-interaction-client (CVSS AV:N, CVSS UI:R)
Exposure
- Identify affected Microsoft products and compare local builds with the MSRC advisory.Telemetry: DeviceTvmSoftwareVulnerabilities · The MSRC product/build mapping establishes applicability. · Rule microsoft-enterprise
- Identify endpoints reporting this CVE, especially those used for email and web browsing.Telemetry: DeviceTvmSoftwareVulnerabilities · A network vector that needs user interaction points at user-facing client software. · Rule user-interaction-client
Exploitation evidence
- Review the advisory's documented behavior on matching hosts before selecting a hunt.Telemetry: DeviceProcessEvents · Product family alone does not justify a CVE-specific detection. · Rule microsoft-enterprise
Show more (2)
Exploitation evidence
- Review unusual child processes started by the affected client application on affected endpoints.Telemetry: DeviceProcessEvents · Hunting hypothesis from the CVSS vector; it does not show that exploitation occurred. · Rule user-interaction-client
Response
- Confirm the source-stated KB or mitigation on matching assets.Telemetry: DeviceTvmSoftwareVulnerabilities · A post-update inventory check verifies remediation. · Rule microsoft-enterprise
CISA KEV Record
CISA KEV status was not determined for this record.
Change History & Source Data
— No recorded material change
- CNA / source
- secure@microsoft.com
- Record status · verification
- UPDATED · Microsoft primary source linked
- CPE
- cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*, cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*, cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*, cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*, cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
Evidence & Provenance
Linked by the query's stored exact CVE association. Review required tables and validation status before use.
Detection Hunting Query
Target: DeviceTvmSoftwareVulnerabilities•Defender XDR
Detect endpoints exposed to CVE-2026-62824
Purpose: Exposure assessment (Category: Exposure Check)Why linked: Query metadata names CVE-2026-62824
DeviceTvmSoftwareVulnerabilities| where CveId == "CVE-2026-62824"| project DeviceId, DeviceName, OSPlatform, OSVersion, SoftwareVendor, SoftwareName, SoftwareVersion, CveId, VulnerabilitySeverityLevel, RecommendedSecurityUpdate, RecommendedSecurityUpdateId| sort by VulnerabilitySeverityLevel descSchema Checked · Not runtime validatedSource: SecOps Signal deterministic template · Limited verificationStatic screening: Passed structure and schema checks; tenant execution is not verified.
Correlated briefings
SecOps Signal surfaces public advisory facts only. A missing value means the source has not published it, not that your environment is unaffected. No tenant inventory is connected.