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
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 46%CVSS: 9.8Exploit: NoneExposed: 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)
EPSS
98.7%
KEV
Not listed

Published

March 23, 2017

Last Modified

May 13, 2026

Advisory Details (6)

Auto-updated Jun 22, 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

Data Freshness Timeline

(refreshed 3× in last 7d / 27× 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. 2026-07-04 06:28 UTCEPSS rescore
  2. 2026-07-02 16:54 UTCEPSS rescore
  3. 2026-07-01 15:02 UTCEPSS rescore
  4. 2026-06-29 14:03 UTCEPSS rescore
  5. 2026-06-28 04:53 UTCEPSS rescore
  6. 2026-06-27 03:06 UTCEPSS rescore
  7. 2026-06-27 03:05 UTCEPSS rescore
  8. 2026-06-25 13:47 UTCEPSS rescore
  9. 2026-06-24 14:02 UTCEPSS rescore
  10. 2026-06-24 14:02 UTCEPSS rescore
  11. 2026-06-23 21:30 UTCEPSS rescore
  12. 2026-06-21 14:54 UTCEPSS rescore
  13. 2026-06-21 14:54 UTCEPSS rescore
  14. 2026-06-21 01:57 UTCEPSS rescore
  15. 2026-06-21 01:57 UTCEPSS rescore
  16. 2026-06-18 17:50 UTCEPSS rescore
  17. 2026-06-17 17:50 UTCEPSS rescore
  18. 2026-06-16 17:50 UTCEPSS rescore
  19. 2026-06-16 17:50 UTCEPSS rescore
  20. 2026-06-15 17:45 UTCEPSS rescore
  21. 2026-06-14 23:14 UTCEPSS rescore
  22. 2026-06-13 22:57 UTCEPSS rescore
  23. 2026-06-12 23:09 UTCEPSS rescore
  24. 2026-06-10 22:15 UTCEPSS rescore
  25. 2026-06-10 13:19 UTCEPSS rescore
Show 51 more
  1. 2026-06-08 14:14 UTCEPSS rescore
  2. 2026-06-08 14:14 UTCEPSS rescore
  3. 2026-06-07 15:22 UTCEPSS rescore
  4. 2026-06-07 15:22 UTCEPSS rescore
  5. 2026-06-06 13:45 UTCEPSS rescore
  6. 2026-06-06 13:45 UTCEPSS rescore
  7. 2026-06-05 22:44 UTCEPSS rescore
  8. 2026-06-04 13:10 UTCEPSS rescore
  9. 2026-06-02 20:11 UTCEPSS rescore
  10. 2026-06-02 20:11 UTCEPSS rescore
  11. 2026-05-31 22:28 UTCEPSS rescore
  12. 2026-05-31 22:28 UTCEPSS rescore
  13. 2026-05-31 00:14 UTCEPSS rescore
  14. 2026-05-31 00:14 UTCEPSS rescore
  15. 2026-05-29 13:41 UTCEPSS rescore
  16. 2026-05-28 13:42 UTCEPSS rescore
  17. 2026-05-28 13:42 UTCEPSS rescore
  18. 2026-05-27 13:38 UTCEPSS rescore
  19. 2026-05-27 13:38 UTCEPSS rescore
  20. 2026-05-26 07:17 UTCEPSS rescore
  21. 2026-05-26 07:17 UTCEPSS rescore
  22. 2026-05-22 21:15 UTCEPSS rescore
  23. 2026-05-22 21:15 UTCEPSS rescore
  24. 2026-05-22 21:15 UTCEPSS rescore
  25. 2026-05-22 21:15 UTCEPSS rescore
  26. 2026-05-22 21:15 UTCEPSS rescore
  27. 2026-05-20 22:37 UTCEPSS rescore
  28. 2026-05-20 22:37 UTCEPSS rescore
  29. 2026-05-20 22:37 UTCEPSS rescore
  30. 2026-05-20 11:21 UTCEPSS rescore
  31. 2026-05-20 11:21 UTCEPSS rescore
  32. 2026-05-20 11:07 UTCEG score recompute
  33. 2026-05-20 11:07 UTCGHSA enrichment
  34. 2026-05-20 07:11 UTCEG score recompute
  35. 2026-05-20 07:11 UTCGHSA enrichment
  36. 2026-05-20 03:15 UTCEG score recompute
  37. 2026-05-20 03:15 UTCGHSA enrichment
  38. 2026-05-19 23:19 UTCEG score recompute
  39. 2026-05-19 23:19 UTCGHSA enrichment
  40. 2026-05-19 19:23 UTCEG score recompute
  41. 2026-05-19 19:23 UTCGHSA enrichment
  42. 2026-05-19 15:27 UTCEG score recompute
  43. 2026-05-19 15:27 UTCGHSA enrichment
  44. 2026-05-19 11:31 UTCEG score recompute
  45. 2026-05-19 11:31 UTCGHSA enrichment
  46. 2026-05-19 07:35 UTCEG score recompute
  47. 2026-05-19 07:34 UTCGHSA enrichment
  48. 2026-05-19 03:38 UTCEG score recompute
  49. 2026-05-19 03:38 UTCGHSA enrichment
  50. 2026-05-18 23:43 UTCEG score recompute
  51. 2026-05-18 21:30 UTCEPSS rescore

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 May 13, 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 98.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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.

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