CVE-2026-118208: Microsoft Exchange Server Spoofing Vulnerability
This Microsoft advisory covers CVE-2026-118208 in Microsoft Exchange Server Subscription Edition RTM.
- CVE-2026-118208
Key facts
- Vendor rating
- High, CVSS 7.1
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L/E:U/RL:O/RC:C· base score 7.1, scored by microsoftAttack vector: network. Attack complexity: low. Privileges required: low. User interaction: none. Scope: unchanged. Confidentiality impact: none. Integrity impact: high. Availability impact: low.- Weakness
- Spoofing
- CISA KEV
- Not listed (catalogue checked )
- Fixed in
- KB5133453 (build 15.02.2562.057)
- Source published
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
Microsoft Exchange Server Spoofing Vulnerability
Affected product named by the advisory: Microsoft Exchange Server Subscription Edition RTM.
Text from the source record.
How to fix CVE-2026-118208
Upgrade to a fixed release named by Microsoft:
- KB5133453 (build 15.02.2562.057)
Vendor guidance
- Install the applicable security update for your platform: KB5133453 (see the Microsoft Update Catalog).
End-of-life dates for Microsoft Exchange Server
More Microsoft Server advisories
CVE-2026-118207Nov 10, 2026Microsoft Exchange Server Remote Code Execution VulnerabilityCVE-2026-118157Nov 10, 2026Microsoft Exchange Server Elevation of Privilege VulnerabilityCVE-2026-118154Nov 10, 2026Microsoft Exchange Server Elevation of Privilege VulnerabilityCVE-2026-118153Nov 10, 2026Microsoft Exchange Server Denial of Service VulnerabilityCVE-2026-118152Nov 10, 2026Microsoft Exchange Server Spoofing VulnerabilityCVE-2026-118151Nov 10, 2026Microsoft Exchange Server Elevation of Privilege Vulnerability
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