CVE-2019-0703

CRITICALNVD 6.59.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-05-23), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 6.5 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: 10%CVSS: 6.5Exploit: cisa kev · ssvc active · epss top5pctExposed: 0

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

An information disclosure vulnerability exists in the way that the Windows SMB Server handles certain requests, aka 'Windows SMB Information Disclosure Vulnerability'. This CVE ID is unique from CVE-2019-0704, CVE-2019-0821.

CVSS v3
6.5
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
10%
EPSS %ILE
95%
KEV
⚠ Exploited

Published

April 9, 2019

Last Modified

October 29, 2025

Advisory Details (2)

Auto-updated Jun 12, 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-2019-0703
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-2019-0703

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 104× in last 7d / 390× 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 1,155 total refreshes for this CVE.

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

Frequently asked(6)

What is CVE-2019-0703?
CVE-2019-0703 is a critical vulnerability published on April 9, 2019. An information disclosure vulnerability exists in the way that the Windows SMB Server handles certain requests, aka 'Windows SMB Information Disclosure Vulnerability'. This CVE ID is unique from CVE-2019-0704, CVE-2019-0821.
When was CVE-2019-0703 disclosed?
CVE-2019-0703 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-2019-0703 actively exploited?
Yes. CISA added CVE-2019-0703 to the Known Exploited Vulnerabilities catalog on May 23, 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-2019-0703?
CVE-2019-0703 has a CVSS v3 base score of 6.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2019-0703?
CVE-2019-0703 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-2019-0703?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-0703, 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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