CVEs / CVE-2018-8581
CVE-2018-8581: Microsoft Exchange Server Privilege Escalation Vulnerability
- Known exploited in the CISA KEV catalog since 3 Mar 2022
- high 7.4 CVSS 3.1 (NVD)
- EPSS 27.5% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
A privilege escalation vulnerability exists in Microsoft Exchange Server. An attacker who successfully exploited this vulnerability could attempt to impersonate any other user of the Exchange server.
Description
An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka "Microsoft Exchange Server Elevation of Privilege Vulnerability." This affects Microsoft Exchange Server.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Microsoft Exchange Server | 2010 | — |
| Microsoft Microsoft Exchange Server | 2013 | — |
| Microsoft Microsoft Exchange Server | 2016 | — |
| Microsoft Microsoft Exchange Server | 2019 | — |
Exploitation
| In CISA KEV since | 3 Mar 2022 |
|---|---|
| Due date for US federal agencies | 17 Mar 2022 |
| Used in ransomware campaigns | Known |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 7.4 highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:NScored by NVD |
|---|
References
- CVE-2018-8581 on NVD
- CVE-2018-8581 in the CISA KEV catalog
- http://www.securityfocus.com/bid/105837 Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1042141 Broken Link, Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8581 Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8581 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.