CVE-2019-0797

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 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
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 2%CVSS: 7.8Exploit: cisa kev · ssvc activeExposed: 0

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

An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0808.

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 PROB
2%
EPSS %ILE
78%
KEV
⚠ Exploited

Published

April 9, 2019

Last Modified

October 29, 2025

Advisory Details (2)

Auto-updated Jun 3, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: microsoft, cisa.
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-2019-0797
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-2019-0797

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 101× in last 7d / 381× 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 1,124 total refreshes for this CVE.

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

Frequently asked(6)

What is CVE-2019-0797?
CVE-2019-0797 is a critical vulnerability published on April 9, 2019. An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0808.
When was CVE-2019-0797 disclosed?
CVE-2019-0797 was first published in the National Vulnerability Database on April 9, 2019, with the most recent update on October 29, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-0797 actively exploited?
Yes. CISA added CVE-2019-0797 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Microsoft Win32k. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2019-0797?
CVE-2019-0797 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-2019-0797?
CVE-2019-0797 affects Microsoft Win32k. 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-2019-0797?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-0797, 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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