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CVE-2017-6743: Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability

criticalknown exploitedCVE-2017-6743
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.
The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE contains a vulnerability that could allow an authenticated, remote attacker to remotely execute code.

CSIRTS triage

vendor: Ciscoproduct: IOS and IOS XE SoftwareRemote code execution
What
The SNMP subsystem contains a vulnerability that could allow an authenticated, remote attacker to remotely execute code.
Who is affected
Authenticated users of Cisco IOS and IOS XE Software are affected.
Urgency
Immediate action is required due to the critical nature of the vulnerability and its exploitation status.
Action
Update to the latest version as advised 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
2022-03-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2017-6743

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-2017-6743coverage & 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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