CVE-2019-0686 — An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka

An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka 'Microsoft Exchange Server Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0724.

01What is this vulnerability?

An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka 'Microsoft Exchange Server Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0724.

02Affected products

Vendor	Product	Versions
Microsoft	Microsoft Exchange Server 2010	Service Pack 3 Update Rollup 26
Microsoft	Microsoft Exchange Server 2013	Cumulative Update 22
Microsoft	Microsoft Exchange Server 2016	Cumulative Update 12
Microsoft	Microsoft Exchange Server 2019	Cumulative Update 1

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

08Timeline

• Published: 2019-03-06T00:00:00.000Z
• Last modified: 2024-08-04T17:51:27.156Z

09References

• portal.msrc.microsoft.com — https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0686
• www.securityfocus.com — http://www.securityfocus.com/bid/106937