KB5026426: Windows Server 2008 R2 Security Update (May 2023)

critical Nessus Plugin ID 175344


The remote Windows host is affected by multiple vulnerabilities.


The remote Windows host is missing security update 5026426. It is, therefore, affected by multiple vulnerabilities

- Windows Pragmatic General Multicast (PGM) Remote Code Execution Vulnerability (CVE-2023-24943)

- Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability (CVE-2023-28283)

- Windows NTLM Security Support Provider Information Disclosure Vulnerability (CVE-2023-24900)

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


Apply Security Update 5026426 or Cumulative Update 5026413

See Also



Plugin Details

Severity: Critical

ID: 175344

File Name: smb_nt_ms23_may_5026426.nasl

Version: 1.11

Type: local

Agent: windows

Published: 5/9/2023

Updated: 6/17/2024

Supported Sensors: Nessus

Risk Information


Risk Factor: Critical

Score: 9.5


Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

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

CVSS Score Source: CVE-2023-24943


Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

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

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

Vulnerability Information

CPE: cpe:/o:microsoft:windows_server_2008:r2

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/9/2023

Vulnerability Publication Date: 5/9/2023

CISA Known Exploited Vulnerability Due Dates: 5/30/2023

Exploitable With

Core Impact

Reference Information

CVE: CVE-2023-24900, CVE-2023-24903, CVE-2023-24904, CVE-2023-24932, CVE-2023-24940, CVE-2023-24942, CVE-2023-24943, CVE-2023-24945, CVE-2023-24946, CVE-2023-28251, CVE-2023-28283, CVE-2023-29324, CVE-2023-29325, CVE-2023-29336

IAVA: 2023-A-0248-S, 2023-A-0249-S

MSFT: MS23-5026413, MS23-5026426

MSKB: 5026413, 5026426