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CVE-2018-0171: Cisco IOS and IOS XE Software Smart Install Remote Code Execution Vulnerability

criticalknown exploitedpublic exploitCVE-2018-0171
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Cisco IOS and IOS XE Software improperly validates packet data, allowing an unauthenticated, remote attacker to trigger a reload of an affected device, cause a denial-of-service (DoS) condition, or perform code execution on the affected device.

CSIRTS triage

vendor: Ciscoproduct: IOS and IOS XE SoftwareRemote code executionDenial of service
What
The vulnerability allows an unauthenticated remote attacker to trigger a device reload, cause a DoS condition, or execute code.
Who is affected
Devices running Cisco IOS and IOS XE Software are affected.
Urgency
Remediation is urgent as the vulnerability is actively exploited and poses critical risks.
Action
Install the latest updates from Cisco.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2021-11-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2018-0171

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2018-0171coverage & exploitation statusNVD · CVE.org

Recent advisories for Cisco IOS and

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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