CVE-2018-3991
10.0
CRITICAL · CVSS 3.0 · EPSS 34.3% (pctl 98)
Patch early
EPSS 34.3% — above the 10% action threshold.
Description
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.
Scoring
| CVSS | 10.0 (CRITICAL, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| EPSS | 34.33% — more likely to be exploited than 98% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2019-02-05 |
| Last modified | 2026-06-17 |
Affected (3)
| Vendor | Product |
|---|---|
| microsoft | windows |
| siemens | simatic wincc open architecture |
| wibu | wibukey |
References
- http://www.securityfocus.com/bid/107005
- https://cert-portal.siemens.com/productcert/pdf/ssa-760124.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-844562.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-902727.pdf
- https://talosintelligence.com/vulnerability_reports/TALOS-2018-0659
- http://www.securityfocus.com/bid/107005
- https://cert-portal.siemens.com/productcert/pdf/ssa-760124.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-844562.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-902727.pdf
- https://talosintelligence.com/vulnerability_reports/TALOS-2018-0659
→ the Explorer · watch your stack · NVD