CVE-2026-50298 | Windows Spaceport.sys Elevation of Privilege Vulnerability

Integer overflow or wraparound in Windows Spaceport.sys allows an unauthorized attacker to elevate privileges with a physical attack.

Published: 2026-07-14 Last update: 2026-07-16 Assigner: [email protected] Source: [email protected]

NVD Status：Analyzed，CVE State: published

View at NVD, CVE.org, EUVD

Threat Intelligence & Risk Assessment for CVE-2026-50298

EPSS CVSS CWE GHSA Affected

Conclusion & alert: CVE-2026-50298 is rated Low Risk (36.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.33%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-50298

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-07-15	—	0.33%	—

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-50298

CVSS metrics for this CVE.

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
6.8	3.1	MEDIUM	`CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:P) Hands-on access—USB, keyboard, opening the case—not something you do purely over the wire. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	0.9	5.9	[email protected]

Weakness enumeration for CVE-2026-50298

CWE-190 MITRE ↗

GitHub Security Advisory for CVE-2026-50298

GHSA-hpjj-hpjh-hcfp · Severity: medium — Integer overflow or wraparound in Windows Spaceport.sys allows an unauthorized attacker to...

Affected software / configurations for CVE-2026-50298

Vendor	Product	Version	Raw CPE
microsoft	windows_10_1607	< 10.0.14393.9339	cpe:2.3:o:microsoft:windows_10_1607:::::::x64:*
microsoft	windows_10_1607	< 10.0.14393.9339	cpe:2.3:o:microsoft:windows_10_1607:::::::x86:*
microsoft	windows_10_1809	< 10.0.17763.9020	cpe:2.3:o:microsoft:windows_10_1809:::::::x64:*
microsoft	windows_10_1809	< 10.0.17763.9020	cpe:2.3:o:microsoft:windows_10_1809:::::::x86:*
microsoft	windows_10_21h2	< 10.0.19044.7548	cpe:2.3:o:microsoft:windows_10_21h2:::::::arm64:*
microsoft	windows_10_21h2	< 10.0.19044.7548	cpe:2.3:o:microsoft:windows_10_21h2:::::::x64:*
microsoft	windows_10_21h2	< 10.0.19044.7548	cpe:2.3:o:microsoft:windows_10_21h2:::::::x86:*
microsoft	windows_10_22h2	< 10.0.19045.7548	cpe:2.3:o:microsoft:windows_10_22h2:::::::arm64:*
microsoft	windows_10_22h2	< 10.0.19045.7548	cpe:2.3:o:microsoft:windows_10_22h2:::::::x64:*
microsoft	windows_10_22h2	< 10.0.19045.7548	cpe:2.3:o:microsoft:windows_10_22h2:::::::x86:*
microsoft	windows_11_24h2	< 10.0.26100.8875	cpe:2.3:o:microsoft:windows_11_24h2:::::::arm64:*
microsoft	windows_11_24h2	< 10.0.26100.8875	cpe:2.3:o:microsoft:windows_11_24h2:::::::x64:*
microsoft	windows_11_25h2	< 10.0.26200.8875	cpe:2.3:o:microsoft:windows_11_25h2:::::::arm64:*
microsoft	windows_11_25h2	< 10.0.26200.8875	cpe:2.3:o:microsoft:windows_11_25h2:::::::x64:*
microsoft	windows_11_26h1	< 10.0.28000.2269	cpe:2.3:o:microsoft:windows_11_26h1:::::::x64:*
microsoft	windows_11_26h1	< 10.0.28000.2525	cpe:2.3:o:microsoft:windows_11_26h1:::::::arm64:*
microsoft	windows_server_2012	—	cpe:2.3:o:microsoft:windows_server_2012:-:::::::*
microsoft	windows_server_2012	r2	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*
microsoft	windows_server_2016	< 10.0.14393.9339	cpe:2.3:o:microsoft:windows_server_2016::::::::
microsoft	windows_server_2019	< 10.0.17763.9020	cpe:2.3:o:microsoft:windows_server_2019::::::::
microsoft	windows_server_2022	< 10.0.20348.5386	cpe:2.3:o:microsoft:windows_server_2022::::::::
microsoft	windows_server_2025	< 10.0.26100.33158	cpe:2.3:o:microsoft:windows_server_2025::::::::

References for CVE-2026-50298

URL	Tags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50298	Patch Vendor Advisory

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