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Known exploited vulnerability

CVE-2019-0703

mediumCVSS 3.1 6.5In CISA KEVEPSS 9.4%Published · Microsoft

The short answer

CVE-2019-0703 affects Microsoft Windows and is rated medium (CVSS 6.5). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-05-23: attackers are using it, so patch it first. The vendor has linked a patch.

What it is

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

6.5 medium

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

Exploited (CISA KEV)

Yes, since May 23, 2022

Federal due date Jun 13, 2022

EPSS, next 30 days

9.4%

Higher than 95% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

What CISA says to do

Apply updates per vendor instructions.

Affected products

Windows, Windows Server. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2019-0703 being exploited?

Yes. CISA added CVE-2019-0703 to its Known Exploited Vulnerabilities catalog on 2022-05-23, with a federal remediation due date of 2022-06-13.

How do I fix CVE-2019-0703?

CISA's required action: Apply updates per vendor instructions.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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