NULL pointer dereference in Microsoft Windows 8.1
CVE-2018-0833
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".
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.399 (98.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.399 · newest: 0.399 · change: 0.000
Affected products
- Microsoft Windows 8.1
- Microsoft Windows Rt 8.1
- Microsoft Windows Server 2012 — versions r2
- Microsoft Corporation Server Message Block — versions Windows 8.1 and RT 8.1 and Windows Server 2012 R2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/102924 (VDB Entry, Third Party Advisory, vdb-entry)
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0833 (Patch, Vendor Advisory)
- www.securitytracker.com/id/1040375 (VDB Entry, Third Party Advisory, vdb-entry)
- github.com/KINGSABRI/CVE-in-Ruby/tree/master/CVE-2018-0833 (Exploit, Third Party Advisory)
- www.exploit-db.com/exploits/44189/ (Exploit, VDB Entry, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2018-0833?
- CVE-2018-0833 is a medium-severity vulnerability in Microsoft Windows 8.1, classified under NULL Pointer Dereference. CVSS score: 5.3/10. Published 2018-02-15.
- How severe is CVE-2018-0833?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2018-0833 known to be exploited?
- 48 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.