CVE-2017-0263

CRITICALNVD 7.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-02-10), 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 — 4 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictMitigate nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 10%CVSS: 7.8Exploit: cisa kev · ssvc active · epss top5pct · public exploitExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

The kernel-mode drivers in Microsoft 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, 1703, and Windows Server 2016 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability."

CVSS v3
7.8
EG Score
9.0CRITICALhigh confidence
EG Risk
81
EG Risk 81/100CISA 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
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Attend at medium and Act at high mission impact.
Action: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
10%
EPSS %ILE
95th
KEV
⚠ Exploited

CISA SSVCTrack at low, Attend at medium and Act at high mission impact.

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation active (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). 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

May 12, 2017

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated May 19, 2026
🔬 Proof of concept available. Fix referenced — no release confirmed yet. Sources: microsoft.
generic🟡 PoC Available

From CVE-2017-0263 To Windows Menu Manager - 小刀志

https://xiaodaozhi.com/exploit/117.html
generic🟡 PoC Available

Microsoft Windows Manager (7 x86) - Menu Management Component UAF Privilege Elevation - Windows_x86 local Exploit

https://www.exploit-db.com/exploits/44478/
microsoftMentions a patch (unverified)

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-2017-0263
generic
http://www.securitytracker.com/id/1038449
generic
http://www.securityfocus.com/bid/98258

Vendor Advisories for CVE-2017-0263(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 97× in last 7d / 399× 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 1,711 total refreshes for this CVE.

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

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-44478
    First seen Mar 26, 2018

    Microsoft Windows Manager (7 x86) - Menu Management Component UAF Privilege Elevation

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2017-0263?
CVE-2017-0263 is a critical vulnerability published on May 12, 2017. The kernel-mode drivers in Microsoft 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, 1703, and Windows Server 2016 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of…
When was CVE-2017-0263 disclosed?
CVE-2017-0263 was first published on May 12, 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-2017-0263 actively exploited?
Yes. CISA added CVE-2017-0263 to the Known Exploited Vulnerabilities catalog on February 10, 2022, affecting Microsoft Win32k. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate attention. A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
What is the CVSS score of CVE-2017-0263?
CVE-2017-0263 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 (CRITICAL).
Which products are affected by CVE-2017-0263?
CVE-2017-0263 affects Microsoft Win32k.
How do I remediate CVE-2017-0263?
A fix for CVE-2017-0263 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation. The vendor advisories EchelonGraph has for CVE-2017-0263 are linked in the Vendor Advisories panel on this page.

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