CVE-2025-50171
published 2025-08-12CVE-2025-50171: Missing authorization in Remote Desktop Server allows an unauthorized attacker to perform spoofing over a network.
PriorityP258critical9.1CVSS 3.1
AVNACLPRNUINSUCHIHAN
EPSS
0.97%
58.1th percentile
Missing authorization in Remote Desktop Server allows an unauthorized attacker to perform spoofing over a network.
Affected
31 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_version_21h2 | >= 10.0.19044.0 < 10.0.19044.6216 | 10.0.19044.6216 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.6216 | 10.0.19045.6216 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.5768 | 10.0.22621.5768 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.5768 | 10.0.22631.5768 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.5768 | 10.0.22631.5768 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.4946 | 10.0.26100.4946 |
| microsoft | windows_server_2022 | < 10.0.20348.3989 | 10.0.20348.3989 |
| microsoft | windows_server_2022 | >= 10.0.20348.0 < 10.0.20348.4052 | 10.0.20348.4052 |
| microsoft | windows_server_2022_23h2 | < 10.0.25398.1791 | 10.0.25398.1791 |
| microsoft | windows_server_2025 | < 10.0.26100.4851 | 10.0.26100.4851 |
| microsoft | windows_server_2025 | >= 10.0.26100.0 < 10.0.26100.4946 | 10.0.26100.4946 |
| msrc | azl3_kernel_6.6.57.1-7_on_azure_linux_3.0 | — | — |
| msrc | azl3_kernel_6.6.64.2-1_on_azure_linux_3.0 | — | — |
| msrc | cbl2_kernel_5.15.167.1-2_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.173.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
| msrc | windows_10_version_21h2_for_32-bit_systems | — | — |
| msrc | windows_10_version_21h2_for_arm64-based_systems | — | — |
| msrc | windows_10_version_21h2_for_x64-based_systems | — | — |
| msrc | windows_10_version_22h2_for_32-bit_systems | — | — |
| msrc | windows_10_version_22h2_for_arm64-based_systems | — | — |
| msrc | windows_10_version_22h2_for_x64-based_systems | — | — |
| msrc | windows_11_version_22h2_for_x64-based_systems | — | — |
| msrc | windows_11_version_23h2_for_arm64-based_systems | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- →CVE-2025-50171 affects Remote Desktop Server; monitor for unauthorized or unauthenticated RDP connection attempts that may indicate spoofing activity over the network ↗
- →Exploitation has not been observed in the wild but is publicly assessed as 'Exploitation Less Likely'; prioritize patching RDP Server components and monitor RDP traffic for anomalous spoofing patterns ↗
- ·Customer action is required; apply the relevant KB updates to remediate the missing authorization flaw in Remote Desktop Server ↗
CVSS provenance
nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
vendor_msrc9.1CRITICAL
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Microsoft
Remote Desktop Spoofing Vulnerability
vendor_msrc·2025-08-12·CVSS 9.1
CVE-2025-50171 [CRITICAL] CWE-862 Remote Desktop Spoofing Vulnerability
Remote Desktop Spoofing Vulnerability
Description: Missing authorization in Remote Desktop Server allows an unauthorized attacker to perform spoofing over a network.
Remote Desktop Server: Remote Desktop Server
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Spoofing
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5063880
Reference: https://support.microsoft.com/help/5063880
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5063812
Reference: https://support.microsoft.com/help/5063812
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5063709
Reference: https://support.microsoft.com/help/5063709
Refere
Microsoft
net: systemport: fix potential memory leak in bcm_sysport_xmit()
vendor_msrc·2024-11-12·CVSS 5.5
CVE-2024-50171 [MEDIUM] CWE-401 net: systemport: fix potential memory leak in bcm_sysport_xmit()
net: systemport: fix potential memory leak in bcm_sysport_xmit()
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: http
GHSA
GHSA-f3vj-5hwj-h699: Missing authorization in Remote Desktop Server allows an unauthorized attacker to perform spoofing over a network
ghsa_unreviewed·2025-08-12
CVE-2025-50171 [CRITICAL] CWE-862 GHSA-f3vj-5hwj-h699: Missing authorization in Remote Desktop Server allows an unauthorized attacker to perform spoofing over a network
Missing authorization in Remote Desktop Server allows an unauthorized attacker to perform spoofing over a network.
No detection rules found.
No public exploits indexed.
2025-08-12
Published