#VU107219 Out-of-bounds read in Windows Server and Windows - CVE-2025-27728

Vulnerability identifier: #VU107219

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-27728

CWE-ID: CWE-125

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Windows Server
Operating systems & Components / Operating system
Windows
Operating systems & Components / Operating system

Vendor: Microsoft

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary condition in Windows Kernel-Mode Driver. A local user can trigger an out-of-bounds read error and read contents of memory on the system, leading to privilege escalation.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Windows Server: 2012 R2 6.3.9600.21871 - 2012 R2 6.3.9600.22470, 2025 10.0.26100.1742 - 2025 10.0.26100.3476

Windows: 10 1607 10.0.14393.10 - 10 1607 10.0.14393.7876, 11 24H2 10.0.26052.1000 - 11 24H2 10.0.26100.3476

---

External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-27728

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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