Buffer overflow in Microsoft Windows
CVE-2018-3991
An exploitable heap overflow vulnerability exists in the WkbProgramLow function of WibuKey Network server management, version 6.40.2402.500. A specially crafted TCP packet can cause a heap overflow, potentially leading to remote code execution. An attacker can send a malformed TCP packet to trigger this vulnerability.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.343 (98.4th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.343 · newest: 0.343 · change: 0.000
Affected products
- Microsoft Windows
- Siemens Simatic Wincc Open Architecture — versions 3.14, 3.15, 3.16
- Wibu Wibukey — versions 6.40.2402.500
Weakness classification (CWE)
References
- www.securityfocus.com/bid/107005 (VDB Entry, Third Party Advisory, vdb-entry)
- cert-portal.siemens.com/productcert/pdf/ssa-844562.pdf (Third Party Advisory)
- cert-portal.siemens.com/productcert/pdf/ssa-760124.pdf (Third Party Advisory, Mitigation)
- cert-portal.siemens.com/productcert/pdf/ssa-902727.pdf
- talosintelligence.com/vulnerability_reports/TALOS-2018-0659 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-3991?
- CVE-2018-3991 is a critical-severity vulnerability in Microsoft Windows, classified under Out-of-bounds Write. CVSS score: 10.0/10. Published 2019-02-05.
- How severe is CVE-2018-3991?
- Critical severity. CVSS v3 base score is 10.0 out of 10.