TI-2018-06012 Aliases CVE-2018-8311 GHSA-v5v7-qp5p-hxjg

Improper input validation in Microsoft Skype

MEDIUM 55CWE-20Published 2018-07-11 · Updated 2024-08-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.16868 97th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Microsoft	Skype	Business 2016 (32-bit); Business 2016 (64-bit)	—	No fix listed	CNA
Microsoft	Microsoft Lync	2013 Service Pack 1 (32-bit); 2013 Service Pack 1 (64-bit)	—	No fix listed	CNA

Skype VendorMicrosoft Affected Business 2016 (32-bit); Business 2016 (64-bit) Fixed in — No fix listed CNA
Microsoft Lync VendorMicrosoft Affected 2013 Service Pack 1 (32-bit); 2013 Service Pack 1 (64-bit) Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:microsoft:lync:-:sp1::::::	not specified by NVD	Vulnerable	Microsoft
cpe:2.3:a:microsoft:skype_for_business:-:::::::*	not specified by NVD	Vulnerable	Microsoft

cpe:2.3:a:microsoft:lync:-:sp1:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
cpe:2.3:a:microsoft:skype_for_business:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-8311
2026-10-03 Alias added: GHSA-v5v7-qp5p-hxjg

References

Advisory 1

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8311

TI-2015-01495 The Windows DirectWrite library, as used in Microsoft .NET Framework 3.0 SP2, 3.5, 3.5.1… KEVCVSS 3.1HIGH 7.8
TI-2013-03410 GDI+ in Microsoft Windows Vista SP2 and Server 2008 SP2; Office 2003 SP3, 2007 SP3, and… KEVCVSS 3.1HIGH 7.8
TI-2015-02157 Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows… CVSS 2.0HIGH 9.3
TI-2016-06177 The Graphics component in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2… CVSS 3.0CRITICAL 9.8
TI-2016-00122 The font library in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2 SP1… CVSS 3.0HIGH 8.8
TI-2015-02207 Buffer overflow in the Adobe Type Manager Library in Microsoft Windows Vista SP2, Windows… CVSS 2.0HIGH 9.3

See all 42 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences