CVE-2025-27475
CVE-2025-27475 is a high-severity vulnerability in Microsoft Windows 11 22h2 with a CVSS 3.x base score of 7.0. 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-591.
Key facts
- Severity: High (CVSS 3.x base score 7.0)
- EPSS exploit prediction: 0% (24th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-10173
- Weakness: CWE-591
- Affected product: Microsoft Windows 11 22h2
- Published:
- Last modified:
Description
Sensitive data storage in improperly locked memory in Windows Update Stack allows an authorized attacker to elevate privileges locally.
Frequently asked questions
- What is CVE-2025-27475?
- Sensitive data storage in improperly locked memory in Windows Update Stack allows an authorized attacker to elevate privileges locally.
- How severe is CVE-2025-27475?
- CVE-2025-27475 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2025-27475 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-27475?
- CVE-2025-27475 primarily affects Microsoft Windows 11 22h2. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2025-27475?
- 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-2025-27475 have an EU (EUVD) identifier?
- Yes. CVE-2025-27475 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-10173.
- When was CVE-2025-27475 published?
- CVE-2025-27475 was published on 2025-04-08 and last updated on 2026-06-17.
References
Affected products (3)
- cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*
More vulnerabilities in Microsoft Windows 11 22h2
- CVE-2025-49708 — Critical (CVSS 9.9): Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges over a network.
- CVE-2025-53766 — Critical (CVSS 9.8): Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code over a network.
- CVE-2025-47981 — Critical (CVSS 9.8): Heap-based buffer overflow in Windows SPNEGO Extended Negotiation allows an unauthorized attacker to execute code over…
- CVE-2025-21307 — Critical (CVSS 9.8): Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability
- CVE-2025-21298 — Critical (CVSS 9.8): Windows OLE Remote Code Execution Vulnerability
- CVE-2024-49112 — Critical (CVSS 9.8): Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability
All CVEs affecting Microsoft Windows 11 22h2 →
Other CWE-591 vulnerabilities
- CVE-2024-38131 — High (CVSS 8.8): Clipboard Virtual Channel Extension Remote Code Execution Vulnerability
- CVE-2025-27482 — High (CVSS 8.1): Sensitive data storage in improperly locked memory in Remote Desktop Gateway Service allows an unauthorized attacker to…
- CVE-2025-24045 — High (CVSS 8.1): Sensitive data storage in improperly locked memory in Windows Remote Desktop Services allows an unauthorized attacker…
- CVE-2025-24035 — High (CVSS 8.1): Sensitive data storage in improperly locked memory in Windows Remote Desktop Services allows an unauthorized attacker…
- CVE-2025-21309 — High (CVSS 8.1): Windows Remote Desktop Services Remote Code Execution Vulnerability
- CVE-2025-21294 — High (CVSS 8.1): Microsoft Digest Authentication Remote Code Execution Vulnerability