High severity8.6NVD Advisory· Published Sep 24, 2020· Updated Jun 17, 2026

CVE-2020-3407

Description

A vulnerability in the RESTCONF and NETCONF-YANG access control list (ACL) function of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to incorrect processing of the ACL that is tied to the RESTCONF or NETCONF-YANG feature. An attacker could exploit this vulnerability by accessing the device using RESTCONF or NETCONF-YANG. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

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Affected products

Cisco Systems, Inc./iOS Xe
cpe:2.3:o:cisco:ios_xe:15.8\(3\)m3:*:*:*:*:*:*:*
Cisco Systems, Inc./IOS and IOS XE Softwarellm-fuzzy
Cisco Systems, Inc./IOS XE Software for Cisco Merakicpe-rescue
Range: n/a

Patches

Vulnerability mechanics

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-confacl-HbPtfSuOnvdVendor Advisory

News mentions

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