CVE-2017-8759

HIGHNVD 7.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.8 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
7.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 87%CVSS: 7.8Exploit: NoneExposed: 0

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

Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to execute code remotely via a malicious document or application, aka ".NET Framework Remote Code Execution Vulnerability."

CVSS v3
7.8
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

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
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
99.7%
KEV
⚠ Exploited

Published

September 13, 2017

Last Modified

April 22, 2026

Advisory Details (7)

Auto-updated May 19, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: microsoft.
generic

GitHub - GitHubAssessments/CVE_Assessments_01_2020 · GitHub

https://github.com/GitHubAssessments/CVE_Assessments_01_2020
generic
http://www.securitytracker.com/id/1039324
generic
http://www.securityfocus.com/bid/100742
generic🟡 PoC Available

Microsoft Windows .NET Framework - Remote Code Execution - Windows remote Exploit

https://www.exploit-db.com/exploits/42711/
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-2017-8759
generic🔴 Active Exploitation

GitHub - nccgroup/CVE-2017-8759: NCC Group's analysis and exploitation of CVE-2017-8759 along with further refinements · GitHub

https://github.com/nccgroup/CVE-2017-8759
generic

GitHub - bhdresh/CVE-2017-8759: Exploit toolkit CVE-2017-8759 - v1.0 is a handy python script which provides pentesters and security researchers a quick and effective way to test Microsoft .NET Framework RCE. It could generate a malicious RTF file and deliver metasploit / meterpreter / other payload to victim without any complex configuration. · GitHub

https://github.com/bhdresh/CVE-2017-8759

Weakness Classification(2)

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 63× in last 7d / 369× 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 730 total refreshes for this CVE.

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

Publicly available exploits

(7 references)

Working exploit code is in the public domain (6 GitHub PoCs) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCashr/CVE-2017-8759-exploits
    First seen Sep 19, 2017

    Two versions of CVE-2017-8759 exploits

    Open source ↗
  • GitHub PoCJonasUliana/CVE-2017-8759
    First seen Sep 17, 2017

    Simple C# implementation of CVE-2017-8759

    Open source ↗
  • GitHub PoCbhdresh/CVE-2017-8759
    First seen Sep 14, 2017

    Exploit toolkit CVE-2017-8759 - v1.0 is a handy python script which provides pentesters and security researchers a quick and effective way to test Microsoft .NET Framework RCE. It could generate a malicious RTF file and deliver metasploit / meterpreter / other payload to victim without any complex configuration.

    Open source ↗
  • Exploit-DBEDB-42711
    First seen Sep 13, 2017

    Microsoft Windows .NET Framework - Remote Code Execution

    Open source ↗
  • GitHub PoCvysecurity/CVE-2017-8759
    First seen Sep 13, 2017

    CVE-2017-8759 - A vulnerability in the SOAP WDSL parser.

    Open source ↗
  • GitHub PoCVoulnet/CVE-2017-8759-Exploit-sample
    First seen Sep 13, 2017

    Running CVE-2017-8759 exploit sample.

    Open source ↗
  • GitHub PoCnccgroup/CVE-2017-8759
    First seen Sep 13, 2017

    NCC Group's analysis and exploitation of CVE-2017-8759 along with further refinements

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2017-8759?
CVE-2017-8759 is a high vulnerability published on September 13, 2017. Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to execute code remotely via a malicious document or application, aka ".NET Framework Remote Code Execution Vulnerability."
When was CVE-2017-8759 disclosed?
CVE-2017-8759 was first published in the National Vulnerability Database on September 13, 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-2017-8759 actively exploited?
Yes. CISA added CVE-2017-8759 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Microsoft .NET Framework. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2017-8759?
CVE-2017-8759 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2017-8759?
CVE-2017-8759 affects Microsoft .NET Framework. 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-2017-8759?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-8759, 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

Explore the affected products and dependency analysis for CVE-2017-8759

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