CVE-2018-0833

Name: CVE-2018-0833
Creator: NVD / NIST
Published: 2018-02-15T02:29:02.373+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 40.64%

Last modified Jun 17, 2026

CVE-2018-0833 is a vulnerability of currently unknown severity. The Microsoft Server Message Block 2.0 and 3.0 (SMBv2/SMBv3) client in Windows 8.1 and RT 8.1 and Windows Server 2012 R2 allows a denial of service vulnerability due to how specially crafted requests are handled, aka "SMBv2/SMBv3 Null Dereference Denial of Service Vulnerability".. EPSS estimates a 40.64% chance of exploitation in the next 30 days.

Description

The Microsoft Server Message Block 2.0 and 3.0 (SMBv2/SMBv3) client in Windows 8.1 and RT 8.1 and Windows Server 2012 R2 allows a denial of service vulnerability due to how specially crafted requests are handled, aka "SMBv2/SMBv3 Null Dereference Denial of Service Vulnerability".

Metrics

EPSS Probability

40.64%

98.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Microsoft	Windows 8.1	All versions
Microsoft	Windows Rt 8.1	All versions
Microsoft	Windows Server 2012	r2

References

http://www.securityfocus.com/bid/102924Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040375Third Party Advisory, VDB Entry
https://github.com/KINGSABRI/CVE-in-Ruby/tree/master/CVE-2018-0833Exploit, Third Party Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0833Patch, Vendor Advisory
https://www.exploit-db.com/exploits/44189/Exploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/102924Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040375Third Party Advisory, VDB Entry
https://github.com/KINGSABRI/CVE-in-Ruby/tree/master/CVE-2018-0833Exploit, Third Party Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0833Patch, Vendor Advisory
https://www.exploit-db.com/exploits/44189/Exploit, Third Party Advisory, VDB Entry

Timeline

Published: Feb 15, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-0833?

How severe is CVE-2018-0833?

Severity scoring for CVE-2018-0833 is pending analysis. The EPSS model estimates a 40.64% probability of exploitation in the next 30 days.

How do I fix CVE-2018-0833?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-0833?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST