Security Feature Bypass in Microsoft Surface

1) Input validation error

EUVDB-ID: #VU103828

Risk: Medium

CVSSv4.0: 4.4 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-21194

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Surface. A remote attacker on the local network can gain unathorized access to the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Surface Laptop 3 with Intel Processor: All versions

Microsoft Surface Hub: All versions

Microsoft Surface Pro 9 ARM: All versions

Surface Windows Dev Kit: All versions

Microsoft Surface Pro 8: All versions

Microsoft Surface Laptop Go: All versions

Microsoft Surface Go 2: All versions

Microsoft Surface Hub 3: All versions

Microsoft Surface Hub 2S: All versions

Microsoft Surface Pro 7+: All versions

Surface Laptop 4 with AMD Processor: All versions

Microsoft Surface Laptop Go 3: All versions

Microsoft Surface Go 3: All versions

Microsoft Surface Laptop Go 2: All versions

Surface Laptop 4 with Intel Processor: All versions

CPE2.3

• cpe:2.3:a:microsoft:surface_laptop_3_with_intel_processor:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_surface_hub:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_surface_pro_9_arm:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:surface_windows_dev_kit:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_surface_pro_8:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_surface_laptop_go:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_surface_go_2:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_surface_hub_3:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_surface_hub_2s:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_surface_pro_7_plus:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:surface_laptop_4_with_amd_processor:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_surface_laptop_go_3:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_surface_go_3:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_surface_laptop_go_2:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:surface_laptop_4_with_intel_processor:*:*:*:*:*:*:*:*

External links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21194

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.