Is CVE-2026-26128 actively exploited?

No active exploitation of CVE-2026-26128 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-26128 be exploited remotely?

No. CVE-2026-26128 requires local access to exploit.

What is the CVSS score of CVE-2026-26128?

CVE-2026-26128 has a CVSS score of 7.8 (HIGH).

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HIGH

CVE-2026-26128

CWE-287Published: March 10, 2026· Updated: Mar 11, 2026

7.8

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.0th

Official Description

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

NVD Source

Technical Analysis

CVE-2026-26128 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.