CVE-2019-0703: Technical Deep-Dive (Auto Refreshed)

Generated on 2026-03-30T15:46:48.427Z. This file is automatically regenerated every 30 minutes by the CVE AI enrichment job using web sources (NVD, MITRE, CISA KEV, GitHub).

Executive Technical Summary

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.

• Context preserved from previous revision: 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. Notes: Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.

Technical Details

• CVE: CVE-2019-0703
• KEV date added: 2022-05-23
• KEV due date: 2022-06-13
• NVD published: 2019-04-09
• NVD modified: 2025-10-29
• MITRE modified: 2025-10-21
• CVSS base score: 6.5
• CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
• CVSS exploitability score: 2.8
• CVSS impact score: 3.6
• Attack vector: Network
• Attack complexity: Low
• Privileges required: Low
• User interaction: None
• Scope: Unchanged
• Confidentiality impact: High
• Integrity impact: None
• Availability impact: None

Versions and Products Impacted

• microsoft / windows 10 1507
• microsoft / windows 10 1607
• microsoft / windows 10 1703
• microsoft / windows 10 1709
• microsoft / windows 10 1803
• microsoft / windows 10 1809
• microsoft / windows 7
• microsoft / windows 8.1
• microsoft / windows rt 8.1
• microsoft / windows server 1709
• microsoft / windows server 1803
• microsoft / windows server 2008
• microsoft / windows server 2008 (versions: r2)
• microsoft / windows server 2012
• microsoft / windows server 2012 (versions: r2)
• microsoft / windows server 2016
• microsoft / windows server 2019
• Microsoft / Windows (versions: 7 for 32-bit Systems Service Pack 1, 7 for x64-based Systems Service Pack 1, 8.1 for 32-bit systems, 8.1 for x64-based systems, RT 8.1, 10 for 32-bit Systems, 10 for x64-based Systems, 10 Version 1607 for 32-bit Systems, 10 Version 1607 for x64-based Systems, 10 Version 1703 for 32-bit Systems)
• Microsoft / Windows Server (versions: 2008 R2 for x64-based Systems Service Pack 1 (Core installation), n/a)

Weakness Classification

• NVD-CWE-noinfo
• Information Disclosure
• CWE-noinfo Not enough information

Repositories for Lab Validation (Public Examples)

• Ostorlab/KEV | stars: 608 | updated: 2026-03-23 | https://github.com/Ostorlab/KEV
  Notes: Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.
• chnzzh/OpenSSL-CVE-lib | stars: 6 | updated: 2026-03-29 | https://github.com/chnzzh/OpenSSL-CVE-lib
• HarshRajSinghania/smbvulnrecon | stars: 0 | updated: 2024-11-25 | https://github.com/HarshRajSinghania/smbvulnrecon

People and Organizations Mentioned

• microsoft
• Windows
• Ostorlab
• chnzzh
• HarshRajSinghania

Practical Defensive Validation (Authorized Only)

1. Use only isolated environments and systems you own or are explicitly authorized to test.
2. Snapshot infrastructure before validation and preserve baseline logs (EDR, SIEM, OS, app).
3. Classify sensitive fields in microsoft / windows 10 1507 and verify logs/responses do not leak secrets.
4. Test redaction and response-minimization controls in debug and production-like modes.
5. Monitor bulk export behavior and abnormal low-privilege read spikes.

References

• NVD record: https://nvd.nist.gov/vuln/detail/CVE-2019-0703
• MITRE CVE record: https://www.cve.org/CVERecord?id=CVE-2019-0703
• CISA KEV Catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• CISA KEV JSON feed: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
• KEV notes: https://nvd.nist.gov/vuln/detail/CVE-2019-0703
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0703
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0703
• Repository example: https://github.com/Ostorlab/KEV
• Repository example: https://github.com/chnzzh/OpenSSL-CVE-lib
• Repository example: https://github.com/HarshRajSinghania/smbvulnrecon

This content is for defensive security training and authorized validation only.