CVE-2026-58527 | Windows Runtime Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.

Published: 2026-07-14 Last update: 2026-07-15 Assigner: [email protected] Source: [email protected]
NVD Status：Awaiting Analysis，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-58527 is rated Low Risk (36.6/100): CVSS High severity, with low exploitation likelihood (EPSS 0.24%). 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-2026-58527

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 — 0.24% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-58527

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
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:L)
A normal user session is enough; they don’t have to be admin.
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.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2026-58527

GitHub Security Advisory for CVE-2026-58527

GHSA-pw8f-4h65-p7v4 · Severity: high — Concurrent execution using shared resource with improper synchronization ('race condition') in...

Affected software / configurations for CVE-2026-58527

Vendor Product Version Raw CPE
microsoft windows_server_2022 >= 10.0.20348.0, < 10.0.20348.5386 cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
microsoft windows_server_2025 >= 10.0.26100.0, < 10.0.26100.33158 cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
microsoft windows_11_25H2 >= 10.0.26200.0, < 10.0.26100.8875 cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*
microsoft windows_11_24H2 >= 10.0.26100.0, < 10.0.26100.8875 cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*
microsoft windows_11_26H1 >= 10.0.28000.0, < 10.0.28000.2525 cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*

References for CVE-2026-58527

cvelogic Threat Intelligence