CVE-2017-6517

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 46%CVSS: 9.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
67(Track*)
EG Risk 67/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation46% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
46%
EPSS %ILE
99%
KEV
Not listed

Published

March 23, 2017

Last Modified

June 17, 2026

Advisory Details (6)

Auto-updated Jul 26, 2026
🔬 Proof of concept available. Patch available. Sources: microsoft.
generic
http://www.securityfocus.com/bid/96969
generic🟡 PoC Available

Full Disclosure: Skype Insecure Library Loading Vulnerability (api-ms-win-core-winrt-string-l1-1-0.dll)

http://seclists.org/fulldisclosure/2017/Mar/44
generic

Vincent Yiu on X: "@CVEnew Totes "hi can you put this dll in your Skype folder and run skype?"" / X

https://twitter.com/vysecurity/status/845013670103003138
generic

Sachin Wagh on X: "One more Hit. Finally Microsoft. Listed in Microsoft Hall of Fame (June 2016 Security Researchers). https://t.co/bScVLWGjQJ" / X

https://twitter.com/tiger_tigerboy/status/755332687141883904
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://technet.microsoft.com/security/cc308575.aspx
generic
http://www.securitytracker.com/id/1038209

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 23× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-26 14:51 UTCEPSS rescore
  2. 2026-07-23 14:15 UTCEPSS rescore
  3. 2026-07-23 01:30 UTCEG score recompute
  4. 2026-07-22 22:09 UTCEG score recompute
  5. 2026-07-22 14:04 UTCEPSS rescore
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  1. 2026-06-25 13:47 UTCEPSS rescore
  2. 2026-06-24 14:02 UTCEPSS rescore
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  4. 2026-06-23 21:30 UTCEPSS rescore
  5. 2026-06-21 14:54 UTCEPSS rescore
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  7. 2026-06-21 01:57 UTCEPSS rescore
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  9. 2026-06-18 17:50 UTCEPSS rescore
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  11. 2026-06-16 17:50 UTCEPSS rescore
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  15. 2026-06-13 22:57 UTCEPSS rescore
  16. 2026-06-12 23:09 UTCEPSS rescore
  17. 2026-06-10 22:15 UTCEPSS rescore
  18. 2026-06-10 13:19 UTCEPSS rescore
  19. 2026-06-08 14:14 UTCEPSS rescore
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  21. 2026-06-07 15:22 UTCEPSS rescore
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  23. 2026-06-06 13:45 UTCEPSS rescore
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  25. 2026-06-05 22:44 UTCEPSS rescore
  26. 2026-06-04 13:10 UTCEPSS rescore
  27. 2026-06-02 20:11 UTCEPSS rescore
  28. 2026-06-02 20:11 UTCEPSS rescore
  29. 2026-05-31 22:28 UTCEPSS rescore
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  31. 2026-05-31 00:14 UTCEPSS rescore
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  36. 2026-05-27 13:38 UTCEPSS rescore
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  38. 2026-05-26 07:17 UTCEPSS rescore
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  40. 2026-05-22 21:15 UTCEPSS rescore
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  45. 2026-05-20 22:37 UTCEPSS rescore
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  48. 2026-05-20 11:21 UTCEPSS rescore
  49. 2026-05-20 11:21 UTCEPSS rescore
  50. 2026-05-20 11:07 UTCGHSA enrichment
  51. 2026-05-20 07:11 UTCGHSA enrichment
  52. 2026-05-20 03:15 UTCGHSA enrichment
  53. 2026-05-19 23:19 UTCGHSA enrichment
  54. 2026-05-19 19:23 UTCGHSA enrichment
  55. 2026-05-19 15:27 UTCGHSA enrichment
  56. 2026-05-19 11:31 UTCGHSA enrichment
  57. 2026-05-19 07:34 UTCGHSA enrichment
  58. 2026-05-19 03:38 UTCGHSA enrichment
  59. 2026-05-18 23:43 UTCEG score recompute
  60. 2026-05-18 21:30 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2017-6517?
CVE-2017-6517 is a critical vulnerability published on March 23, 2017. 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…
When was CVE-2017-6517 disclosed?
CVE-2017-6517 was first published in the National Vulnerability Database on March 23, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-6517 actively exploited?
CVE-2017-6517 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 46% probability of exploitation in the next 30 days, which ranks it in the top 1.3% of all scored CVEs.
What is the CVSS score of CVE-2017-6517?
CVE-2017-6517 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-6517?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-6517, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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