What is CVE-2019-12657?

CVE-2019-12657 is a high-severity vulnerability in Cisco 4321 Integrated Services Router, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2019-09-25.

How severe is CVE-2019-12657?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in Cisco 4321 Integrated Services Router

CVE-2019-12657

A vulnerability in Unified Threat Defense (UTD) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper validation of IPv6 packets through the UTD feature. An attacker could exploit this vulnerability by sending IPv6 traffic through an affected device that is configured with UTD. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.020 (79.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2019-12657?: CVE-2019-12657 is a high-severity vulnerability in Cisco 4321 Integrated Services Router, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2019-09-25.
How severe is CVE-2019-12657?: High severity. CVSS v3 base score is 7.5 out of 10.