CVE-2026-119991ImportantInformation DisclosureNetwork

Microsoft Configuration Manager Information Disclosure Vulnerability

MSRC advisory NVD CVE.org

Assessment

Weak authentication in Microsoft Configuration Manager allows an unauthorized attacker to disclose information over a network.

Severity: Important
CVSS base score: 5.9
Impact: Information Disclosure
Exploitation detected: No known exploitation (MSRC assessment)
Exploitability: Exploitation Less Likely
Publicly disclosed: No (MSRC assessment)
EPSS · 30-day forecast: No EPSS score collected
Customer action: Required: follow the MSRC remediation guidance

More details

CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Public detection template: No Nuclei template is listed in the current collected catalog
Component: Microsoft Configuration Manager
Weakness: CWE-1390: Weak Authentication
Issued by: Microsoft
Published: 10 Nov 2026 · November 2026
Last revised: 10 Nov 2026

CVSS 3.1 base metricsRed raises the risk · green lowers it

Attack vector: NetworkAV:N
Attack complexity: HighAC:H
Privileges required: NonePR:N
User interaction: NoneUI:N
Scope: UnchangedS:U
Confidentiality: HighC:H
Integrity: NoneI:N
Availability: NoneA:N

Updates that fix it

0 KBs

No KB listed

No KB update is listed in the collected MSRC record. Check the MSRC advisory for product releases and other remedies.

Affected products

Windows

1 affected product

Microsoft Configuration Manager 2603

Page history

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cve-program · CVE-2026-119991

Published

Microsoft Configuration Manager 2603

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "Microsoft",
                    "product": "Microsoft Configuration Manager 2603",
                    "versions": [
                        {
                            "version": "1.0.0",
                            "lessThan": "5.0.9146.1045",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON