CVE-2025-40548
published 2025-11-18CVE-2025-40548: A missing validation process exists in Serv U when abused, could give a malicious actor with access to admin privileges the ability to execute code. This issue…
PriorityP357critical9.1CVSS 3.1
AVNACLPRHUINSCCHIHAH
EPSS
0.65%
46.3th percentile
A missing validation process exists in Serv U when abused, could give a malicious actor with access to admin privileges the ability to execute code.
This issue requires administrative privileges to abuse. On Windows deployments, the risk is scored as a medium because services frequently run under less-privileged service accounts by default.
Affected
17 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| msrc | azl3_shim-unsigned-aarch64_15.4-2_on_azure_linux_3.0 | — | — |
| msrc | azl3_shim-unsigned-aarch64_15.8-5_on_azure_linux_3.0 | — | — |
| msrc | azl3_shim-unsigned-x64_15.4-3_on_azure_linux_3.0 | — | — |
| msrc | azl3_shim-unsigned-x64_15.8-5_on_azure_linux_3.0 | — | — |
| msrc | azl3_shim_15.4-2_on_azure_linux_3.0 | — | — |
| msrc | azl3_shim_15.8-5_on_azure_linux_3.0 | — | — |
| msrc | azure_linux_3.0_arm | — | — |
| msrc | azure_linux_3.0_x64 | — | — |
| msrc | cbl2_shim-unsigned-aarch64_15-5_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_shim-unsigned-x64_15.4-2_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_shim-unsigned-x64_15.8-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_shim_15.4-2_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_shim_15.8-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
| solarwinds | serv-u | < 15.5.3 | 15.5.3 |
| solarwinds | serv-u | — | — |
CVSS provenance
nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
vendor_msrc7.4HIGH
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GHSA
GHSA-crpp-v376-mvfw: A missing validation process exists in Serv U when abused, could give a malicious actor with access to admin privileges the ability to execute code
ghsa_unreviewed·2025-11-18
CVE-2025-40548 [CRITICAL] CWE-269 GHSA-crpp-v376-mvfw: A missing validation process exists in Serv U when abused, could give a malicious actor with access to admin privileges the ability to execute code
A missing validation process exists in Serv U when abused, could give a malicious actor with access to admin privileges the ability to execute code.
This issue requires administrative privileges to abuse. On Windows deployments, the risk is scored as a medium because services frequently run under less-privileged service accounts by default.
Microsoft
Shim: interger overflow leads to heap buffer overflow in verify_sbat_section on 32-bits systems
vendor_msrc·2024-01-09·CVSS 7.4
CVE-2023-40548 [HIGH] CWE-787 Shim: interger overflow leads to heap buffer overflow in verify_sbat_section on 32-bits systems
Shim: interger overflow leads to heap buffer overflow in verify_sbat_section on 32-bits systems
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
redhat: redhat
Customer Action Required: Yes
Remediation: CBL-
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-11-18
Published