Multiple vulnerabilities in Microsoft Windows Installer

Published: 2025-06-10 | Updated: 2025-06-12

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2025-33075 CVE-2025-32714
CWE-ID	CWE-59 CWE-284
Exploitation vector	Local
Public exploit	N/A
Vulnerable software	Windows Operating systems & Components / Operating system Windows Server Operating systems & Components / Operating system
Vendor	Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Link following

EUVDB-ID: #VU110737

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-2025-33075

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Exploit availability: No

Description

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

The vulnerability exists due to an insecure link following issue in Windows Installer. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 10 21H2 10.0.19041.3920 - 11 24H2 10.0.26100.4264

Windows Server: 2008 6.0.6003.22567 - 2025 10.0.26100.4264

CPE2.3

External links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-33075
https://www.zerodayinitiative.com/advisories/ZDI-25-332/

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.

2) Improper access control

EUVDB-ID: #VU110738