CVE-2017-0283

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
8.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (Exploit-DB (verified), epss top5pct, public exploit)
CISA-KEV: Not listedEPSS PROB: 39%CVSS: 8.8Exploit: Exploit-DB (verified) · epss top5pct · public exploitExposed services: Not assessed

A fix is available — apply it.

Uniscribe in Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, Windows Server 2016, Microsoft Office 2007 SP3, Microsoft Office 2010 SP2, Microsoft Office Word Viewer, Microsoft Lync 2013 SP1, Skype for Business 2016, Microsoft Silverlight 5 Developer Runtime when installed on Microsoft Windows, and Microsoft Silverlight 5 when installed on Microsoft Windows allows a remote code execution vulnerability due to the way it handles objects in memory, aka "Windows Uniscribe Remote Code Execution Vulnerability". This CVE ID is unique from CVE-2017-8528.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
70
EG Risk 70/100CISA SSVC

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
Severity88% × 45%
Exploitation65% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
39%
EPSS %ILE
98th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (EG-KEV: weaponized) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

June 15, 2017

Last Modified

June 17, 2026

Advisory Details (6)

Auto-updated May 22, 2026
🔬 Proof of concept available. Patch available. Sources: microsoft.
generic
https://bugs.chromium.org/p/project-zero/issues/detail?id=1198
generic

0patch Blog: 0patching the Quick Brown Fox of CVE-2017-0283

https://0patch.blogspot.com/2017/07/0patching-quick-brown-fox-of-cve-2017.html
generic
http://www.securitytracker.com/id/1038675
generic
http://www.securityfocus.com/bid/98920
generic🟡 PoC Available

Microsoft Windows - 'USP10!MergeLigRecords' Uniscribe Font Processing Heap Memory Corruption - Windows dos Exploit

https://www.exploit-db.com/exploits/42234/
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-2017-0283

Vendor Advisories for CVE-2017-0283(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 5× in last 7d / 19× 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 124 total refreshes for this CVE.

  1. 2026-10-03 14:21 UTCEPSS rescore
  2. 2026-10-03 14:21 UTCEPSS rescore
  3. 2026-09-30 14:58 UTCEPSS rescore
  4. 2026-09-30 09:18 UTCEG score recompute
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  1. 2026-08-21 23:44 UTCEPSS rescore
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  3. 2026-08-17 13:42 UTCEPSS rescore
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  5. 2026-08-16 02:10 UTCEPSS rescore
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  7. 2026-08-12 13:46 UTCEPSS rescore
  8. 2026-08-11 13:36 UTCEPSS rescore
  9. 2026-08-07 16:22 UTCEPSS rescore
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  18. 2026-07-28 15:31 UTCEPSS rescore
  19. 2026-07-26 14:50 UTCEPSS rescore
  20. 2026-07-25 14:13 UTCEPSS rescore
  21. 2026-07-24 14:13 UTCEPSS rescore
  22. 2026-07-23 14:15 UTCEPSS rescore
  23. 2026-07-23 01:25 UTCEG score recompute
  24. 2026-07-22 22:04 UTCEG score recompute
  25. 2026-07-22 14:04 UTCEPSS rescore
  26. 2026-07-21 15:21 UTCEPSS rescore
  27. 2026-07-21 15:21 UTCEPSS rescore
  28. 2026-07-20 17:04 UTCEPSS rescore
  29. 2026-07-19 14:28 UTCEPSS rescore
  30. 2026-07-19 14:28 UTCEPSS rescore
  31. 2026-07-19 02:26 UTCEPSS rescore
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  40. 2026-07-13 22:26 UTCEPSS rescore
  41. 2026-07-13 06:09 UTCEPSS rescore
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  44. 2026-07-11 08:24 UTCEPSS rescore
  45. 2026-07-09 19:06 UTCEPSS rescore
  46. 2026-07-08 15:10 UTCEPSS rescore
  47. 2026-07-06 02:20 UTCEPSS rescore
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  49. 2026-07-01 15:02 UTCEPSS rescore
  50. 2026-06-30 23:19 UTCEPSS rescore
  51. 2026-06-30 23:19 UTCEPSS rescore
  52. 2026-06-28 14:04 UTCEPSS rescore
  53. 2026-06-28 04:53 UTCEPSS rescore
  54. 2026-06-27 03:05 UTCEPSS rescore
  55. 2026-06-25 13:47 UTCEPSS rescore
  56. 2026-06-24 14:02 UTCEPSS rescore
  57. 2026-06-23 21:30 UTCEPSS rescore
  58. 2026-06-21 01:57 UTCEPSS rescore
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  60. 2026-06-19 19:23 UTCEPSS rescore
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  62. 2026-06-18 17:50 UTCEPSS rescore
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  64. 2026-06-17 17:50 UTCEPSS rescore
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  66. 2026-06-16 17:50 UTCEPSS rescore
  67. 2026-06-15 17:45 UTCEPSS rescore
  68. 2026-06-12 23:09 UTCEPSS rescore
  69. 2026-06-07 15:22 UTCEPSS rescore
  70. 2026-06-07 15:22 UTCEPSS rescore
  71. 2026-06-06 13:45 UTCEPSS rescore
  72. 2026-06-06 13:45 UTCEPSS rescore
  73. 2026-06-05 22:44 UTCEPSS rescore
  74. 2026-06-05 06:08 UTCEPSS rescore
  75. 2026-06-05 06:08 UTCEPSS rescore

Publicly available exploits

(1 reference)

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

  • Exploit-DBEDB-42234✓ verified
    First seen Jun 23, 2017

    Microsoft Windows - 'USP10!MergeLigRecords' Uniscribe Font Processing Heap Memory Corruption

    Open source ↗

Frequently asked(5)

What is CVE-2017-0283?
CVE-2017-0283 is a high vulnerability published on June 15, 2017. Uniscribe in Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, Windows Server 2016, Microsoft Office 2007 SP3, Microsoft Office 2010 SP2, Microsoft Office Word Viewer, Microsoft Lync 2013 SP1, Skype for…
When was CVE-2017-0283 disclosed?
CVE-2017-0283 was first published on June 15, 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-2017-0283 actively exploited?
CVE-2017-0283 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model classifies it as weaponized: a functional public exploit exists. FIRST EPSS estimates a 39% probability of exploitation in the next 30 days (98th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2017-0283?
CVE-2017-0283 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2017-0283?
A fix for CVE-2017-0283 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2017-0283 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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