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CVE-2017-3881: Cisco IOS and IOS XE Remote Code Execution Vulnerability

criticalknown exploitedpublic exploitCVE-2017-3881
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.
A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device or remotely execute code with elevated privileges.

CSIRTS triage

vendor: Ciscoproduct: IOS and IOS XERemote code execution
What
A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code could allow an unauthenticated, remote attacker to execute code with elevated privileges.
Who is affected
Deployments of Cisco IOS and IOS XE Software.
Urgency
Immediate remediation is necessary as the vulnerability is critical and actively exploited.
Action
Apply the latest security patches provided by 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
2022-03-25
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2017-3881

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-2017-3881coverage & 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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