CVE-2025-27478
published 2025-04-08CVE-2025-27478: Heap-based buffer overflow in Windows Local Security Authority (LSA) allows an authorized attacker to elevate privileges locally.
PriorityP337high7CVSS 3.1
AVLACHPRLUINSUCHIHAH
EPSS
0.42%
34.2th percentile
Heap-based buffer overflow in Windows Local Security Authority (LSA) allows an authorized attacker to elevate privileges locally.
Affected
54 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
nvdv3.17.0HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
vendor_msrc7.0HIGH
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GHSA
GHSA-2j6p-wf3v-2mvp: Heap-based buffer overflow in Windows Local Security Authority (LSA) allows an authorized attacker to elevate privileges locally
ghsa_unreviewed·2025-04-08
CVE-2025-27478 [HIGH] CWE-122 GHSA-2j6p-wf3v-2mvp: Heap-based buffer overflow in Windows Local Security Authority (LSA) allows an authorized attacker to elevate privileges locally
Heap-based buffer overflow in Windows Local Security Authority (LSA) allows an authorized attacker to elevate privileges locally.
Microsoft
Windows Local Security Authority (LSA) Elevation of Privilege Vulnerability
vendor_msrc·2025-04-08·CVSS 7.0
CVE-2025-27478 [HIGH] CWE-122 Windows Local Security Authority (LSA) Elevation of Privilege Vulnerability
Windows Local Security Authority (LSA) Elevation of Privilege Vulnerability
Description: Heap-based buffer overflow in Windows Local Security Authority (LSA) allows an authorized attacker to elevate privileges locally.
FAQ: According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires an attacker to win a race condition.
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:
Microsoft
Disclosure of unrelated data in libmemcached-awesome
vendor_msrc·2023-03-14·CVSS 6.5
CVE-2023-27478 [MEDIUM] CWE-200 Disclosure of unrelated data in libmemcached-awesome
Disclosure of unrelated data in libmemcached-awesome
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
GitHub_M: GitHub_M
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https://le
No detection rules found.
No public exploits indexed.
2025-04-08
Published