CVE-2018-3991

high-risk
Published 2019-02-05

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.

Do I need to act?

!
79.3% chance of exploitation in next 30 days
EPSS score — higher than 21% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
10
CVSS 10.0/10 Critical
NETWORK / LOW complexity

Affected Products (4)

Wibukey
Simatic Wincc Open Architecture
Simatic Wincc Open Architecture
Simatic Wincc Open Architecture

Affected Vendors

Siemens Wibu

References (10)

Third Party Advisory http://www.securityfocus.com/bid/107005
Mitigation https://cert-portal.siemens.com/productcert/pdf/ssa-760124.pdf
Third Party Advisory https://cert-portal.siemens.com/productcert/pdf/ssa-844562.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-902727.pdf
Exploit https://talosintelligence.com/vulnerability_reports/TALOS-2018-0659
Third Party Advisory http://www.securityfocus.com/bid/107005
Mitigation https://cert-portal.siemens.com/productcert/pdf/ssa-760124.pdf
Third Party Advisory https://cert-portal.siemens.com/productcert/pdf/ssa-844562.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-902727.pdf
Exploit https://talosintelligence.com/vulnerability_reports/TALOS-2018-0659
63
/ 100
high-risk
Severity 33/34 · Critical
Exploitability 20/34 · Moderate
Exposure 10/34 · Low