Microsoft Windows up to Server 2025 Event Tracing improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.8$0-$5k1.10+

Summaryinfo

A vulnerability was found in Microsoft Windows 11 24H2/11 25H2/11 26H1/11 26H2/Server 2025. It has been declared as problematic. This issue affects some unknown processing of the component Event Tracing. Such manipulation leads to improper authentication. This vulnerability is listed as CVE-2026-70235. The attack must be carried out locally. There is no available exploit. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows 11 24H2/11 25H2/11 26H1/11 26H2/Server 2025 and classified as problematic. Affected by this issue is some unknown processing of the component Event Tracing. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is integrity. CVE summarizes:

Improper authentication in Windows Event Tracing allows an authorized attacker to perform spoofing locally.

The advisory is shared for download at msrc.microsoft.com. This vulnerability is handled as CVE-2026-70235 since 08/04/2026. The exploitation is known to be easy. The attack needs to be approached locally. Additional levels of successful authentication are necessary for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/14/2026).

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-99077). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.9
VulDB Meta Temp Score: 3.8

VulDB Base Score: 2.3
VulDB Temp Score: 2.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.5
CNA Vector (microsoft): 🔒

CVSSv2info

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

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/04/2026 CVE reserved
10/14/2026 +71 days Advisory disclosed
10/14/2026 +0 days VulDB entry created
10/14/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2026-70235 (🔒)
GCVE (CVE): GCVE-0-2026-70235
GCVE (VulDB): GCVE-100-418928
EUVD: 🔒

Entryinfo

Created: 10/14/2026 03:03
Updated: 10/14/2026 03:37
Changes: 10/14/2026 03:03 (63), 10/14/2026 03:37 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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