CVE-2026-26128

HIGH
2026-03-10 [email protected]
7.8
CVSS 3.1
Share

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Mar 10, 2026 - 18:18 nvd
HIGH 7.8

Tags

Microsoft Authentication Bypass Windows

Description

Improper authentication in Windows SMB Server allows an authorized attacker to elevate privileges locally.

Analysis

Windows SMB Server's authentication mechanism can be bypassed by local authenticated users to gain elevated privileges on affected systems. This high-severity vulnerability (CVSS 7.8) impacts confidentiality, integrity, and availability, though no patch is currently available. …

Sign in for full analysis, threat intelligence, and remediation guidance.

Remediation

Within 24 hours: inventory all Windows systems running SMB Server and identify those with domain users or service accounts; restrict SMB access via firewall rules to only necessary network segments. Within 7 days: implement enhanced monitoring of SMB authentication and privilege escalation attempts; review and audit user access levels across affected systems. …

Sign in for detailed remediation steps.

Full analysis requires sign-in

Get intelligence summaries, risk assessment, exploit details, threat intel, and remediation guidance.

Sign in - Free

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +39
POC: 0

Share

CVE-2026-26128 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy