CVE-2017-8543

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-05-24), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
9.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 74%CVSS: 9.8Exploit: NoneExposed: 0

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

Microsoft Windows XP SP3, Windows XP x64 XP2, Windows Server 2003 SP2, Windows Vista, Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allow an attacker to take control of the affected system when Windows Search fails to handle objects in memory, aka "Windows Search Remote Code Execution Vulnerability".

CVSS v3
9.8
EG Score
9.8(high)
EPSS
99.4%
KEV
⚠ Exploited

Published

June 15, 2017

Last Modified

April 22, 2026

Advisory Details (4)

Auto-updated May 12, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa, microsoft.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-8543
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

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

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8543
generic
http://www.securitytracker.com/id/1038667
generic
http://www.securityfocus.com/bid/98824

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 121× in last 7d / 521× 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.

Showing the most recent 100 of 868 total refreshes for this CVE.

  1. 2026-07-16 12:06 UTCEG score recompute
  2. 2026-07-16 12:06 UTCVendor advisory
  3. 2026-07-16 12:06 UTCGHSA enrichment
  4. 2026-07-16 07:51 UTCEG score recompute
  5. 2026-07-16 07:51 UTCVendor advisory
  6. 2026-07-16 07:51 UTCGHSA enrichment
  7. 2026-07-16 03:36 UTCEG score recompute
  8. 2026-07-16 03:36 UTCVendor advisory
  9. 2026-07-16 03:36 UTCGHSA enrichment
  10. 2026-07-15 23:21 UTCEG score recompute
  11. 2026-07-15 23:21 UTCVendor advisory
  12. 2026-07-15 23:21 UTCGHSA enrichment
  13. 2026-07-15 19:06 UTCEG score recompute
  14. 2026-07-15 19:06 UTCVendor advisory
  15. 2026-07-15 19:06 UTCGHSA enrichment
  16. 2026-07-15 16:55 UTCEPSS rescore
  17. 2026-07-15 16:54 UTCEPSS rescore
  18. 2026-07-15 16:49 UTCCISA KEV update
  19. 2026-07-15 15:04 UTCCISA KEV update
  20. 2026-07-15 14:51 UTCEG score recompute
  21. 2026-07-15 14:51 UTCVendor advisory
  22. 2026-07-15 14:51 UTCGHSA enrichment
  23. 2026-07-15 10:36 UTCEG score recompute
  24. 2026-07-15 10:36 UTCVendor advisory
  25. 2026-07-15 10:36 UTCGHSA enrichment
Show 75 more
  1. 2026-07-15 06:21 UTCEG score recompute
  2. 2026-07-15 06:21 UTCVendor advisory
  3. 2026-07-15 06:21 UTCGHSA enrichment
  4. 2026-07-15 02:06 UTCEG score recompute
  5. 2026-07-15 02:05 UTCGHSA enrichment
  6. 2026-07-14 21:50 UTCEG score recompute
  7. 2026-07-14 21:50 UTCVendor advisory
  8. 2026-07-14 21:50 UTCGHSA enrichment
  9. 2026-07-14 18:05 UTCCISA KEV update
  10. 2026-07-14 17:35 UTCEG score recompute
  11. 2026-07-14 17:35 UTCVendor advisory
  12. 2026-07-14 17:35 UTCGHSA enrichment
  13. 2026-07-14 13:20 UTCEG score recompute
  14. 2026-07-14 13:20 UTCVendor advisory
  15. 2026-07-14 13:20 UTCGHSA enrichment
  16. 2026-07-14 09:05 UTCEG score recompute
  17. 2026-07-14 09:05 UTCVendor advisory
  18. 2026-07-14 09:04 UTCGHSA enrichment
  19. 2026-07-14 04:49 UTCEG score recompute
  20. 2026-07-14 04:49 UTCVendor advisory
  21. 2026-07-14 04:49 UTCGHSA enrichment
  22. 2026-07-14 00:32 UTCEG score recompute
  23. 2026-07-14 00:32 UTCGHSA enrichment
  24. 2026-07-13 22:26 UTCEPSS rescore
  25. 2026-07-13 22:26 UTCEPSS rescore
  26. 2026-07-13 20:17 UTCEG score recompute
  27. 2026-07-13 20:17 UTCGHSA enrichment
  28. 2026-07-13 17:07 UTCCISA KEV update
  29. 2026-07-13 16:01 UTCEG score recompute
  30. 2026-07-13 16:01 UTCGHSA enrichment
  31. 2026-07-13 11:45 UTCEG score recompute
  32. 2026-07-13 11:45 UTCGHSA enrichment
  33. 2026-07-13 07:29 UTCEG score recompute
  34. 2026-07-13 07:29 UTCGHSA enrichment
  35. 2026-07-13 03:14 UTCEG score recompute
  36. 2026-07-13 03:14 UTCGHSA enrichment
  37. 2026-07-12 22:58 UTCEG score recompute
  38. 2026-07-12 22:58 UTCVendor advisory
  39. 2026-07-12 22:58 UTCGHSA enrichment
  40. 2026-07-12 18:43 UTCEG score recompute
  41. 2026-07-12 18:43 UTCVendor advisory
  42. 2026-07-12 18:43 UTCGHSA enrichment
  43. 2026-07-12 14:28 UTCEG score recompute
  44. 2026-07-12 14:28 UTCVendor advisory
  45. 2026-07-12 14:28 UTCGHSA enrichment
  46. 2026-07-12 10:12 UTCEG score recompute
  47. 2026-07-12 10:12 UTCVendor advisory
  48. 2026-07-12 10:12 UTCGHSA enrichment
  49. 2026-07-12 05:57 UTCEG score recompute
  50. 2026-07-12 05:57 UTCVendor advisory
  51. 2026-07-12 05:57 UTCGHSA enrichment
  52. 2026-07-12 01:42 UTCEG score recompute
  53. 2026-07-12 01:42 UTCVendor advisory
  54. 2026-07-12 01:41 UTCGHSA enrichment
  55. 2026-07-11 21:25 UTCEG score recompute
  56. 2026-07-11 21:25 UTCVendor advisory
  57. 2026-07-11 21:25 UTCGHSA enrichment
  58. 2026-07-11 17:10 UTCEG score recompute
  59. 2026-07-11 17:10 UTCVendor advisory
  60. 2026-07-11 17:10 UTCGHSA enrichment
  61. 2026-07-11 12:55 UTCEG score recompute
  62. 2026-07-11 12:55 UTCVendor advisory
  63. 2026-07-11 12:55 UTCGHSA enrichment
  64. 2026-07-11 08:40 UTCEG score recompute
  65. 2026-07-11 08:40 UTCVendor advisory
  66. 2026-07-11 08:40 UTCGHSA enrichment
  67. 2026-07-11 08:24 UTCEPSS rescore
  68. 2026-07-11 04:24 UTCEG score recompute
  69. 2026-07-11 04:24 UTCVendor advisory
  70. 2026-07-11 04:24 UTCGHSA enrichment
  71. 2026-07-11 00:08 UTCEG score recompute
  72. 2026-07-11 00:08 UTCVendor advisory
  73. 2026-07-11 00:08 UTCGHSA enrichment
  74. 2026-07-10 19:52 UTCEG score recompute
  75. 2026-07-10 19:52 UTCVendor advisory

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Frequently asked(6)

What is CVE-2017-8543?
CVE-2017-8543 is a critical vulnerability published on June 15, 2017. Microsoft Windows XP SP3, Windows XP x64 XP2, Windows Server 2003 SP2, Windows Vista, Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allow an attacker to take…
When was CVE-2017-8543 disclosed?
CVE-2017-8543 was first published in the National Vulnerability Database on June 15, 2017, with the most recent update on April 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-8543 actively exploited?
Yes. CISA added CVE-2017-8543 to the Known Exploited Vulnerabilities catalog on May 24, 2022, affecting Microsoft Windows. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2017-8543?
CVE-2017-8543 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2017-8543?
CVE-2017-8543 affects Microsoft Windows. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2017-8543?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-8543, 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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