What’s Vulnerable › Vulnerabilities

CVE-2018-0833

• Severity: medium (CVSS 5.3 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 39.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-02-15 · updated 2026-06-17
• Weakness: CWE-476

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".

Affected products

• Microsoft Windows 8.1: all versions
• Microsoft Windows RT 8.1: all versions
• Microsoft Windows Server 2012: r2
• Microsoft Corporation Server Message Block: Windows 8.1 and RT 8.1 and Windows Server 2012 R2

References

• http://www.securityfocus.com/bid/102924
• http://www.securitytracker.com/id/1040375
• https://github.com/KINGSABRI/CVE-in-Ruby/tree/master/CVE-2018-0833
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0833
• https://www.exploit-db.com/exploits/44189/
• http://www.securityfocus.com/bid/102924
• http://www.securitytracker.com/id/1040375
• https://github.com/KINGSABRI/CVE-in-Ruby/tree/master/CVE-2018-0833
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0833
• https://www.exploit-db.com/exploits/44189/

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