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 100× in last 7d / 412× 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 1,509 total refreshes for this CVE.

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

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 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

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