How severe is CVE-2019-0703?

CVE-2019-0703 has a CVSS 3.1 base score of 6.5 (MEDIUM). EPSS estimates a 9.6% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2019-0703: Microsoft Windows SMB Information Disclosure

CISA Known Exploited Vulnerabilities

Microsoft Windows SMB Information Disclosure Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2022-05-23

Remediation due

2022-06-13

Required action
Apply updates per vendor instructions.

CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2019-0703

Description

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.

Severity

CVSS 3.1 · CISA6.5 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impactpartial

Affected Products

Vendor	Product	Affected versions
Microsoft	Windows	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 10 Version 1703 for x64-based Systems 10 Version 1709 for 32-bit Systems 10 Version 1709 for x64-based Systems 10 Version 1803 for 32-bit Systems 10 Version 1803 for x64-based Systems 10 Version 1803 for ARM64-based Systems 10 Version 1809 for 32-bit Systems 10 Version 1709 for ARM64-based Systems
Microsoft	Windows Server	2008 R2 for x64-based Systems Service Pack 1 (Core installation) n/a

References

1 Links

Other references

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0703

Record Details

Published

2019-04-08

Last updated

2025-10-21

Assigner (CNA)

microsoft

Credited to

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.