How severe is CVE-2026-47289?

CVE-2026-47289 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-47289 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-47289?

CVE-2026-47289 primarily affects Microsoft Windows App. In total, 25 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-47289?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-47289 have an EU (EUVD) identifier?

Yes. CVE-2026-47289 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35700.

When was CVE-2026-47289 published?

CVE-2026-47289 was published on 2026-06-09 and last updated on 2026-06-17.

CVE-2026-47289

CVE-2026-47289 is a high-severity vulnerability in Microsoft Windows App with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-122.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-35700
Weakness: CWE-122
Affected product: Microsoft Windows App
Published: 2026-06-09
Last modified: 2026-06-17

Description

Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

Frequently asked questions

What is CVE-2026-47289?: Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
How severe is CVE-2026-47289?: CVE-2026-47289 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-47289 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-47289?: CVE-2026-47289 primarily affects Microsoft Windows App. In total, 25 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-47289?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-47289 have an EU (EUVD) identifier?: Yes. CVE-2026-47289 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35700.
When was CVE-2026-47289 published?: CVE-2026-47289 was published on 2026-06-09 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47289

Affected products (25)

cpe:2.3:a:microsoft:windows_app:*:*:*:*:*:windows:*:*
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*
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:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:*

More vulnerabilities in Microsoft Windows App

CVE-2026-42985 — High (CVSS 8.8): Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVE-2025-58718 — High (CVSS 8.8): Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVE-2025-48817 — High (CVSS 8.8): Relative path traversal in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVE-2025-29966 — High (CVSS 8.8): Heap-based buffer overflow in Windows Remote Desktop allows an unauthorized attacker to execute code over a network.
CVE-2025-26645 — High (CVSS 8.8): Relative path traversal in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVE-2024-49105 — High (CVSS 8.4): Remote Desktop Client Remote Code Execution Vulnerability

All CVEs affecting Microsoft Windows App →

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