CVE-2017-6517

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 46.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-03-23 · updated 2026-06-17
Weakness: CWE-427

Description

Microsoft Skype 7.16.0.102 contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on the targeted system. This vulnerability exists due to the way .dll files are loaded by Skype. It allows an attacker to load a .dll of the attacker's choosing that could execute arbitrary code without the user's knowledge.The specific flaw exists within the handling of DLL (api-ms-win-core-winrt-string-l1-1-0.dll) loading by the Skype.exe process.

Affected products

Microsoft Skype: 7.16.0.102

References

http://packetstormsecurity.com/files/141650/Skype-7.16.0.102-DLL-Hijacking.html
http://seclists.org/fulldisclosure/2017/Mar/44
http://www.securityfocus.com/bid/96969
http://www.securitytracker.com/id/1038209
https://technet.microsoft.com/security/cc308575.aspx
https://twitter.com/tiger_tigerboy/status/755332687141883904
https://twitter.com/vysecurity/status/845013670103003138
http://packetstormsecurity.com/files/141650/Skype-7.16.0.102-DLL-Hijacking.html
http://seclists.org/fulldisclosure/2017/Mar/44
http://www.securityfocus.com/bid/96969
http://www.securitytracker.com/id/1038209
https://technet.microsoft.com/security/cc308575.aspx

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