CVE-2019-0543

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 2022-03-15), 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: 5%CVSS: 7.8Exploit: cisa kev · ssvc active · kev ransomware · Exploit-DB (verified) · public exploitExposed: 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 when Windows improperly handles authentication requests, aka "Microsoft Windows Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2019, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.

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
5%
EPSS %ILE
91%
KEV
⚠ Exploited

Published

January 8, 2019

Last Modified

January 14, 2026

Advisory Details (4)

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-2019-0543
generic🟡 PoC Available

Microsoft Windows 10 - SSPI Network Authentication Session 0 Privilege Escalation - Windows local Exploit

https://www.exploit-db.com/exploits/46156/
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-2019-0543
generic
http://www.securityfocus.com/bid/106408

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 64× in last 7d / 380× 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 774 total refreshes for this CVE.

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

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-46156✓ verified
    First seen Jan 14, 2019

    Microsoft Windows 10 - SSPI Network Authentication Session 0 Privilege Escalation

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2019-0543?
CVE-2019-0543 is a critical vulnerability published on January 8, 2019. An elevation of privilege vulnerability exists when Windows improperly handles authentication requests, aka "Microsoft Windows Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2019, Windows Server 2012,…
When was CVE-2019-0543 disclosed?
CVE-2019-0543 was first published in the National Vulnerability Database on January 8, 2019, with the most recent update on January 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-0543 actively exploited?
Yes. CISA added CVE-2019-0543 to the Known Exploited Vulnerabilities catalog on March 15, 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-2019-0543?
CVE-2019-0543 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-2019-0543?
CVE-2019-0543 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-2019-0543?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-0543, 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-2019-0543

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