CVE-2019-0703
KEVMicrosoft Windows SMB Information Disclosure Vulnerability
Description
An information disclosure vulnerability exists in the way that the Windows SMB Server handles certain requests, which could lead to information disclosure from the server.
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 3.1 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NPublishedApr 9, 2019
Last modifiedJun 17, 2026
Added to KEVMay 23, 2022
Remediation dueJun 13, 2022
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0703PatchVendor Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0703US Government Resource
0 recent articles mention this CVE
63
Risk assessment · High
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1596 days
- CVSS
- 6.5 MEDIUM
- EPSS (30-day exploit probability)
- 9.4% · top 5% of all CVEs
- Weakness
- NVD-CWE-noinfo
- Attack vector
- Network, remotely reachable
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.