Skip to content
skopnix
Dossier · Vulnerability

Actively exploited · CISA KEV · NVD published 2018-03-28

CVE-2018-0171

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, or to execute arbitrary code on an affected device. The vulnerability is due to improper validation of packet data. An attacker could exploit this vulnerability by sending a crafted Smart Install message to an affected device on TCP port 4786. A successful exploit could allow the attacker to cause a buffer overflow on the affected device, which could have the following impacts: Triggering a reload of the device, Allowing the attacker to execute arbitrary code on the device, Causing an indefinite loop on the affected device that triggers a watchdog crash. Cisco Bug IDs: CSCvg76186.

  1. First PoC
  2. 3124 days →First cited attacker

Signals

Exploited in the wild
Yesadded 2021-11-03 · due 2022-05-03. An observation, not a forecast.
EPSS · 30-day forecast
99%Chance of exploitation in the next 30 days, 100th percentile of all CVEs. A forecast; KEV outranks it.
CVSS · NVD · CRITICAL
9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Internet exposure
not stated by sourcesNo exposure census on this CVE's dispatches.

Exploits

2 known · links only

Exploit-DB1

  1. Cisco Smart Install - Crash (PoC) ↗

    created 2018-03-29

Nuclei1

  1. Cisco Smart Install - Configuration Download ↗

    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, or to execute arbitrary code on an affected device. The vulnerability is due to improper validation of packet data.

    yaml · seen 2026-10-18

On the wire

0 dispatches

No dispatch on our wire has named this CVE yet.

Watch this one?

KEV additions reach Telegram and the KEV-only RSS as they land.

Follow on TelegramKEV RSSAPI

Check your stack

Paste what you run: the CVEs exploited in the wild against it, and who is cited as exploiting them, with the report.

Stack checkNo key. No signup.