Detections
Analytics

KB5075971: Windows Server 2012 Security Update (February 2026)

high Nessus Plugin ID 298552

Synopsis

The remote Windows host is affected by multiple vulnerabilities.

Description

The remote Windows host is missing security update 5075971. It is, therefore, affected by multiple vulnerabilities

 - Protection mechanism failure in MSHTML Framework allows an unauthorized attacker to bypass a security feature over a network. (CVE-2026-21513)

 - Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally. (CVE-2026-21246)

 - Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally. (CVE-2026-21235)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Apply Security Update 5075971

See Also

https://support.microsoft.com/help/5075971

Plugin Details

Severity: High

ID: 298552

File Name: smb_nt_ms26_feb_5075971.nasl

Version: 1.2

Type: local

Agent: windows

Published: 2/10/2026

Updated: 2/11/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-21513

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:microsoft:windows_server_2012

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/10/2026

Vulnerability Publication Date: 2/10/2026

Reference Information

CVE: CVE-2026-20846, CVE-2026-21231, CVE-2026-21235, CVE-2026-21236, CVE-2026-21238, CVE-2026-21239, CVE-2026-21246, CVE-2026-21253, CVE-2026-21508, CVE-2026-21510, CVE-2026-21513, CVE-2026-21525, CVE-2026-21533

MSFT: MS26-5075971

MSKB: 5075971