CVE-2018-8159
An elevation of privilege vulnerability exists when Microsoft Exchange Outlook Web Access (OWA)...
An elevation of privilege vulnerability exists when Microsoft Exchange Outlook Web Access (OWA) fails to properly handle web requests, aka "Microsoft Exchange Elevation of Privilege Vulnerability." This affects Microsoft Exchange Server.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
An elevation of privilege vulnerability exists when Microsoft Exchange Outlook Web Access (OWA) fails to properly handle web requests, aka "Microsoft Exchange Elevation of Privilege Vulnerability." This affects Microsoft Exchange Server.
- Record
CVE-2018-8159- CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N - CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
An elevation of privilege vulnerability exists when Microsoft Exchange Outlook Web Access (OWA) fails to properly handle web requests, aka "Microsoft Exchange Elevation of Privilege Vulnerability." This affects Microsoft Exchange Server.
- Record
CVE-2018-8159- Updated
- 2026-11-02
EUVDEUVD-2018-19830 No score
An elevation of privilege vulnerability exists when Microsoft Exchange Outlook Web Access (OWA) fails to properly handle web requests, aka "Microsoft Exchange Elevation of Privilege Vulnerability." This affects Microsoft Exchange Server.
- Record
EUVD-2018-19830- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-f9g9-xmqv-vpcg
An elevation of privilege vulnerability exists when Microsoft Exchange Outlook Web Access (OWA)...
An elevation of privilege vulnerability exists when Microsoft Exchange Outlook Web Access (OWA) fails to properly handle web requests, aka "Microsoft Exchange Elevation of Privilege Vulnerability." This affects Microsoft Exchange Server.
- Record
GHSA-f9g9-xmqv-vpcg- CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-8159 is a medium vulnerability (CVSS 5.4) in Microsoft Exchange Server, published May 9, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.51%, the 89th percentile. No source names a fixed version.