CVE-2018-8153
A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails to properly handle web requests, aka "Microsoft Exchange Spoofing Vulnerability." This affects Microsoft Exchange Server.
Does this matter?
Lower severity and a low EPSS score (3.44%). Track it; it rarely justifies an emergency change on its own.
Description
A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails to properly handle web requests, aka "Microsoft Exchange Spoofing Vulnerability." This affects Microsoft Exchange Server.
- CVSS 3.0
- 5.4 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- EPSS
- 3.44% probability · 89th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-290
- Affected
- microsoft/exchange server
- Source
- secure@microsoft.com
EPSS moved from 4.8% on 21 September 2026 to 3.4% on 27 October 2026.
References
- http://www.securityfocus.com/bid/104045Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040850Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8153Patch, Vendor Advisory
- http://www.securityfocus.com/bid/104045Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040850Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8153Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.