Which products and versions are affected by CVE-2017-6517?

Affected: Skype (Microsoft) versions 7.16.0.102. The full list is in the CVE brief.

Is CVE-2017-6517 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2017-6517 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2017-6517?

No public exploit code is known.

Is there a fix for CVE-2017-6517?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2017-6517 be patched?

Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.

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CVE-2017-6517Skype Vulnerability

Microsoft Skype 7.16.0.102 contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on the targeted system.

Published Mar 23, 2017 · Updated May 12, 2026

Key Facts

Patch in the next maintenance window

CVE-2017-6517 is a critical-severity vulnerability (CVSS 9.8 v3) affecting Skype (Microsoft).
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 46% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.

Scores

CVSS v3

9.8

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

46%

Higher than 98.8% of all scored CVEs

Exploit maturity

Proof of concept

ATLAS score

44/100

Publication score, see How it works

Exploitation Verdict

KEV listed

Not listed

Federal due date

None

No federal due date

Ransomware use

Not reported

Attributed actors

None named

Exploit & Defence Guidance

Exploit maturity

Proof of concept

Public exploit code

Proof-of-concept links

In-the-wild evidence

Reports of active use

Advisories And Exploit References

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

1 affected entries in total

Product	Affected versions	Fixed in
SkypeMicrosoft	7.16.0.102	n/a

Timeline

Publicly disclosed
Mar 23, 2017
Last updated
May 12, 2026

Weakness Type

CWE-427 Uncontrolled Search Path Element

References

2 more references in the full CVE brief

FAQ

Common Questions.

Microsoft Skype 7.16.0.102 contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on the targeted system.
Affected: Skype (Microsoft) versions 7.16.0.102. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.

Is CVE-2017-6517 On Your Attack Surface?

Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.