Microsoft Windows up to Server 2025 CPU OP Cache improper isolation of shared resources on system-on-a-chip (soc)

CVSS Meta Temp Score
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CTI Interest Score
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5.3$5k-$25k0.00

Summaryinfo

A vulnerability classified as critical has been found in Microsoft Windows. The impacted element is an unknown function of the component CPU OP Cache. Performing a manipulation results in an unknown weakness. This vulnerability is reported as CVE-2025-54518. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Microsoft Windows. This affects some unknown processing of the component CPU OP Cache. CWE is classifying the issue as CWE-1189. The System-On-a-Chip (SoC) does not properly isolate shared resources between trusted and untrusted agents. The impact remains unknown. The summary by CVE is:

Improper isolation of shared resources within the CPU operation cache on Zen 2-based products could allow an attacker to corrupt instructions executed at a different privilege level, potentially resulting in privilege escalation.

The weakness was disclosed 05/12/2026 as security update guide (Website). The advisory is shared at msrc.microsoft.com. This vulnerability is uniquely identified as CVE-2025-54518. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 07/03/2026).

The vulnerability scanner Nessus provides a plugin with the ID 314333 (Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-50260)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 10.0.17763.8755 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202605-2955), Tenable (314333), EUVD (EUVD-2025-209882) and CERT Bund (WID-SEC-2026-1489). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Microsoft Windows Server 2012
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows Server 2016
  • Microsoft Windows 10
  • Microsoft Windows Server 2019
  • Microsoft Windows Server 2022
  • Microsoft Windows 11
  • Microsoft Windows Server 2025
  • Microsoft Windows Admin Center

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper isolation of shared resources on system-on-a-chip (soc)
CWE: CWE-1189
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 314333
Nessus Name: Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-50260)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒

Upgrade: Windows 10.0.17763.8755

Timelineinfo

05/12/2026 VulDB entry created
05/12/2026 +0 days Advisory disclosed
05/12/2026 +0 days Countermeasure disclosed
07/03/2026 +51 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2025-54518 (🔒)
GCVE (CVE): GCVE-0-2025-54518
GCVE (VulDB): GCVE-100-363117
EUVD: 🔒
CERT Bund: WID-SEC-2026-1489 - Microsoft Windows Produkte: Mehrere Schwachstellen
CNNVD: CNNVD-202605-2955 - AMD EPYC Processor 安全漏洞

scip Labs: https://www.scip.ch/en/?labs.20161215

Entryinfo

Created: 05/12/2026 19:09
Updated: 07/03/2026 00:01
Changes: 05/12/2026 19:09 (3), 05/12/2026 19:10 (12), 05/12/2026 19:13 (42), 05/13/2026 16:04 (6), 05/13/2026 20:32 (2), 05/15/2026 07:23 (6), 05/16/2026 08:13 (1), 07/03/2026 00:01 (14)
Complete: 🔍
Cache ID: 216::103

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