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 execu…
Vulnerability class: Buffer Overflow
EPSS: 0.343 (98.2th percentile) — read the EPSS interpretation.
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.
Affected products
- Microsoft Windows
- Siemens Simatic_wincc_open_architecture — versions 3.14, 3.15, 3.16
- Wibu Wibukey — versions 6.40.2402.500
- N/a — versions n/a
Weakness classification (CWE)
References
- talos-cna@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- talos-cna@cisco.com (x_refsource_CONFIRM, Third Party Advisory)
- talos-cna@cisco.com (x_refsource_CONFIRM, Third Party Advisory, Mitigation)
- talos-cna@cisco.com (x_refsource_CONFIRM)
- talos-cna@cisco.com (Exploit, Third Party Advisory, x_refsource_MISC)
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.