CVE-2018-8448
An elevation of privilege vulnerability exists when Microsoft Exchange Outlook Web Access (OWA) fails to properly handle web requests, aka "Microsoft Exchange Server Elevation of Privilege Vulnerability." This affects Microsoft Exchange Server.
Does this matter?
Lower severity and a low EPSS score (3.17%). Track it; it rarely justifies an emergency change on its own.
Description
An elevation of privilege vulnerability exists when Microsoft Exchange Outlook Web Access (OWA) fails to properly handle web requests, aka "Microsoft Exchange Server Elevation of Privilege 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
- 3.17% probability · 88th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- microsoft/exchange server
- Source
- secure@microsoft.com
EPSS moved from 4.4% on 21 September 2026 to 3.2% on 27 October 2026.
References
- http://www.securityfocus.com/bid/105492Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041836Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8448Patch, Vendor Advisory
- http://www.securityfocus.com/bid/105492Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041836Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8448Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.