CVE-2025-27727
published 2025-04-08CVE-2025-27727: Improper link resolution before file access ('link following') in Windows Installer allows an authorized attacker to elevate privileges locally.
PriorityP344high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.91%
56.0th percentile
Improper link resolution before file access ('link following') in Windows Installer allows an authorized attacker to elevate privileges locally.
Affected
47 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1507 | < 10.0.10240.20978 | 10.0.10240.20978 |
| microsoft | windows_10_1607 | < 10.0.14393.7969 | 10.0.14393.7969 |
| microsoft | windows_10_1809 | < 10.0.17763.7136 | 10.0.17763.7136 |
| microsoft | windows_10_21h2 | < 10.0.19044.5737 | 10.0.19044.5737 |
| microsoft | windows_10_22h2 | < 10.0.19045.5737 | 10.0.19045.5737 |
| microsoft | windows_10_version_1507 | >= 10.0.10240.0 < 10.0.10240.20978 | 10.0.10240.20978 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.7969 | 10.0.14393.7969 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.7136 | 10.0.17763.7136 |
| microsoft | windows_10_version_21h2 | >= 10.0.19044.0 < 10.0.19044.5737 | 10.0.19044.5737 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.5737 | 10.0.19045.5737 |
| microsoft | windows_11_22h2 | < 10.0.22621.5189 | 10.0.22621.5189 |
| microsoft | windows_11_23h2 | < 10.0.22631.5189 | 10.0.22631.5189 |
| microsoft | windows_11_24h2 | < 10.0.26100.3775 | 10.0.26100.3775 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.5189 | 10.0.22621.5189 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.5189 | 10.0.22631.5189 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.5189 | 10.0.22631.5189 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.3775 | 10.0.26100.3775 |
| microsoft | windows_server_2008 | — | — |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.7601.0 < 6.1.7601.27670 | 6.1.7601.27670 |
| microsoft | windows_server_2008_service_pack_2 | >= 6.0.6003.0 < 6.0.6003.23220 | 6.0.6003.23220 |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.25423 | 6.2.9200.25423 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.22523 | 6.3.9600.22523 |
| microsoft | windows_server_2016 | < 10.0.14393.7969 | 10.0.14393.7969 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.7969 | 10.0.14393.7969 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vendor_msrc7.8HIGH
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GHSA
GHSA-m8g5-jr5h-6c6f: Improper link resolution before file access ('link following') in Windows Installer allows an authorized attacker to elevate privileges locally
ghsa_unreviewed·2025-04-08
CVE-2025-27727 [HIGH] CWE-59 GHSA-m8g5-jr5h-6c6f: Improper link resolution before file access ('link following') in Windows Installer allows an authorized attacker to elevate privileges locally
Improper link resolution before file access ('link following') in Windows Installer allows an authorized attacker to elevate privileges locally.
Microsoft
Windows Installer Elevation of Privilege Vulnerability
vendor_msrc·2025-04-08·CVSS 7.8
CVE-2025-27727 [HIGH] CWE-59 Windows Installer Elevation of Privilege Vulnerability
Windows Installer Elevation of Privilege Vulnerability
Description: Improper link resolution before file access ('link following') in Windows Installer allows an authorized attacker to elevate privileges locally.
FAQ: Are the updates for Windows 10 for x64-based Systems and Windows 10 for 32-bit Systems currently available?
Yes. As of April 9, 2025, the security update (5055547) for Windows 10 for x64-based Systems and Windows 10 for 32-bit Systems are available. Customers running Windows 10 should ensure the update is installed to be protected from this vulnerability.
FAQ: What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.
Windows Installer: Windows Instal
No detection rules found.
No public exploits indexed.
Talos
Microsoft Patch Tuesday for April 2025 — Snort rules and prominent vulnerabilities
blogs_talos·2025-04-08·CVSS 8.1
[HIGH] Microsoft Patch Tuesday for April 2025 — Snort rules and prominent vulnerabilities
Microsoft has released its monthly security update for April of 2025 which includes 126 vulnerabilities affecting a range of products, including 11 that Microsoft marked as “critical”.
In this month's release, none of the included vulnerabilities have been observed by Microsoft to be exploited in the wild. The eleven "critical” entries are all remote code execution (RCE) vulnerabilities, four of which have been marked as "Exploitation more likely".
Two of the “critical” vulnerabilities listed affect components of the Windows Remote Desktop Services.
CVE-2025-27480 and CVE-2025-27482 are RCE vulnerabilities in components of the Remote Desktop Gateway Service. Both vulnerabilities were given a CVSS 3.1 score of 8.1. To successfully exploit these an attacker could connect to a system with
Talos
Microsoft Patch Tuesday for April 2025 — Snort rules and prominent vulnerabilities
blogs_talos·2025-04-08·CVSS 8.1
[HIGH] Microsoft Patch Tuesday for April 2025 — Snort rules and prominent vulnerabilities
## Microsoft Patch Tuesday for April 2025 — Snort rules and prominent vulnerabilities
Microsoft has released its monthly security update for April of 2025 which includes 126 vulnerabilities affecting a range of products, including 11 that Microsoft marked as “critical”.
In this month's release, none of the included vulnerabilities have been observed by Microsoft to be exploited in the wild. The eleven "critical” entries are all remote code execution (RCE) vulnerabilities, four of which have been marked as "Exploitation more likely".
Two of the “critical” vulnerabilities listed affect components of the Windows Remote Desktop Services.
CVE-2025-27480 and CVE-2025-27482 are RCE vulnerabilities in components of the Remote Desktop Gateway Service. Both vulnerabilities were given a CVSS 3.1
Qualys
Microsoft and Adobe Patch Tuesday, April 2025 Security Update Review | Qualys
blogs_qualys·2025-04-08
Microsoft and Adobe Patch Tuesday, April 2025 Security Update Review | Qualys
#### Table of Contents
- Microsoft Patch Tuesday for April 2025
- Adobe Patches for April 2025
- Zero-day Vulnerabilities Patched in April Patch Tuesday Edition
- Critical Severity Vulnerabilities Patched in April Patch Tuesday Edition
- Other Microsoft Vulnerability Highlights
- Microsoft Release Summary
- Discover and Prioritize Vulnerabilities inVulnerability Management, Detection & Response (VMDR)
- Rapid Response withPatch Management (PM)
- EVALUATE Vendor-Suggested Mitigation with Policy Compliance (PC)
- Qualys Monthly Webinar Series
Microsoft’s April 2025 Patch Tuesday has arrived, delivering critical security updates and fixes across the various products, features, and roles. Here’s a quick breakdown of what you need to know.
## Microsoft Patch Tuesday for April 2025
In this m
Bleepingcomputer
Microsoft April 2025 Patch Tuesday fixes exploited zero-day, 134 flaws
blogs_bleepingcomputer·2025-04-08·CVSS 7.8
[HIGH] Microsoft April 2025 Patch Tuesday fixes exploited zero-day, 134 flaws
## Microsoft April 2025 Patch Tuesday fixes exploited zero-day, 134 flaws
## Lawrence Abrams
49 Elevation of Privilege Vulnerabilities
9 Security Feature Bypass Vulnerabilities
31 Remote Code Execution Vulnerabilities
17 Information Disclosure Vulnerabilities
14 Denial of Service Vulnerabilities
3 Spoofing Vulnerabilities
The above numbers do not include Mariner flaws and 13 Microsoft Edge vulnerabilities fixed earlier this month.
To learn more about the non-security updates released today, you can review our dedicated articles on the Windows 11 KB5055523 & KB5055528 cumulative updates and the Windows 10 KB5055518 update .
## One actively exploited zero-days
This month's Patch Tuesday fixes one actively exploited zero-day. Microsoft classifies a zero-day flaw as publicly disclos
Qualys
Microsoft and Adobe Patch Tuesday, April 2025 Security Update Review
blogs_qualys·2025-04-08
Microsoft and Adobe Patch Tuesday, April 2025 Security Update Review
## Table of Contents
Microsoft Patch Tuesday for April 2025
Adobe Patches for April 2025
Zero-day Vulnerabilities Patched in April Patch Tuesday Edition
Critical Severity Vulnerabilities Patched in April Patch Tuesday Edition
Other Microsoft Vulnerability Highlights
Microsoft Release Summary
Discover and Prioritize Vulnerabilities inVulnerability Management, Detection & Response (VMDR)
Rapid Response withPatch Management (PM)
EVALUATE Vendor-Suggested Mitigation with Policy Compliance (PC)
Qualys Monthly Webinar Series
Microsoft’s April 2025 Patch Tuesday has arrived, delivering critical security updates and fixes across the various products, features, and roles. Here’s a quick breakdown of what you need to know.
## Microsoft Patch Tuesday for April 2025
In this month’s Patch
2025-04-08
Published