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OpenAdvisories
High · 7.5 Known exploited CVE-2018-0156 EUVD-2018-0979GHSA-25w3-v3vx-g29w

A vulnerability in the Smart Install feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacke…

Published Mar 28, 2018 · Updated Jan 12, 2026 · Assigned by cisco

Description

A vulnerability in the Smart Install feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of packet data. An attacker could exploit this vulnerability by sending a crafted packet to an affected device on TCP port 4786. Only Smart Install client switches are affected. Cisco devices that are configured as a Smart Install director are not affected by this vulnerability. Cisco Bug IDs: CSCvd40673.

Affected products

VendorProductAffectedFixed
— Cisco IOS and IOS XE Cisco IOS and IOS XE —

Advisories 2

References