Detections
Analytics

KB5075897: Windows Server version 23H2 Security Update (February 2026)

medium Nessus Plugin ID 298558

Synopsis

The remote Windows host is affected by multiple vulnerabilities.

Description

The remote Windows host is missing security update 5075897. It is, therefore, affected by multiple vulnerabilities

 - A heap-based buffer overflow issue was discovered in libjpeg-turbo in h2v2_merged_upsample_internal() function of jdmrgext.c file. The vulnerability can only be exploited with 12-bit data precision for which the range of the sample data type exceeds the valid sample range, hence, an attacker could craft a 12-bit lossless JPEG image that contains out-of-range 12-bit samples. An application attempting to decompress such image using merged upsampling would lead to segmentation fault or buffer overflows, causing an application to crash. (CVE-2023-2804)

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

 - Access of resource using incompatible type ('type confusion') in Desktop Window Manager allows an authorized attacker to elevate privileges locally. (CVE-2026-21519)

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 5075897

See Also

https://support.microsoft.com/help/5075897

Plugin Details

Severity: Medium

ID: 298558

File Name: smb_nt_ms26_feb_5075897.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: Medium

Base Score: 6.5

Temporal Score: 6

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

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

CVSS Score Source: CVE-2023-2804

Vulnerability Information

CPE: cpe:/o:microsoft:windows_server_23h2

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: 5/25/2023

Reference Information

CVE: CVE-2023-2804, CVE-2026-20846, CVE-2026-21222, CVE-2026-21231, CVE-2026-21232, CVE-2026-21234, CVE-2026-21236, CVE-2026-21237, CVE-2026-21238, CVE-2026-21239, CVE-2026-21240, CVE-2026-21241, CVE-2026-21242, CVE-2026-21243, CVE-2026-21244, CVE-2026-21246, CVE-2026-21247, CVE-2026-21248, CVE-2026-21249, CVE-2026-21250, CVE-2026-21251, CVE-2026-21253, CVE-2026-21255, CVE-2026-21508, CVE-2026-21510, CVE-2026-21513, CVE-2026-21519, CVE-2026-21525, CVE-2026-21533

MSFT: MS26-5075897

MSKB: 5075897