CVE-2018-8311

Name: CVE-2018-8311
Creator: NVD / NIST
Published: 2018-07-11T00:29:02.133+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 16.62%

Last modified Jun 17, 2026

CVE-2018-8311 is a vulnerability of currently unknown severity. A remote code execution vulnerability exists when Skype for Business and Microsoft Lync clients fail to properly sanitize specially crafted content, aka "Remote Code Execution Vulnerability in Skype For Business and Lync." This affects Skype, Microsoft Lync.. EPSS estimates a 16.62% chance of exploitation in the next 30 days.

Description

A remote code execution vulnerability exists when Skype for Business and Microsoft Lync clients fail to properly sanitize specially crafted content, aka "Remote Code Execution Vulnerability in Skype For Business and Lync." This affects Skype, Microsoft Lync.

Metrics

EPSS Probability

16.62%

96.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions	Update
Microsoft	Lync	All versions	Sp1
Microsoft	Skype For Business	All versions	—

References

http://www.securityfocus.com/bid/104624Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041259Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041260Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8311Vendor Advisory
http://www.securityfocus.com/bid/104624Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041259Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041260Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8311Vendor Advisory

Timeline

Published: Jul 11, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-8311?

How severe is CVE-2018-8311?

Severity scoring for CVE-2018-8311 is pending analysis. The EPSS model estimates a 16.62% probability of exploitation in the next 30 days.

How do I fix CVE-2018-8311?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-8311?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST