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High severity7.5NVD Advisory· Published Aug 8, 2019· Updated Jun 17, 2026

CVE-2019-1957

CVE-2019-1957

Description

A vulnerability in the web interface of Cisco IoT Field Network Director could allow an unauthenticated, remote attacker to trigger high CPU usage, resulting in a denial of service (DoS) condition on an affected device. The vulnerability is due to improper handling of Transport Layer Security (TLS) renegotiation requests. An attacker could exploit this vulnerability by sending renegotiation requests at a high rate. A successful exploit could increase the resource usage on the system, eventually leading to a DoS condition.

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Affected products

3
  • Cisco Systems, Inc./IoT Field Network Director3 versions
    cpe:2.3:a:cisco:iot_field_network_director:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:cisco:iot_field_network_director:*:*:*:*:*:*:*:*range: <4.4.2-11
    • (no CPE)
    • (no CPE)range: unspecified

Patches

Vulnerability mechanics

References

1

News mentions

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