CVE-2017-6736VulnerabilityPublished 03/03/2022Updated 10/24/2026

CVE-2017-6736: Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability

Affects Cisco IOS and IOS XE SoftwareSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 03/03/2022
KEV deadline: 03/24/2022
EPSS: 70.4% chance of exploitation in 30 days – higher than 99% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2017-6736 (opens in a new tab)

Description

CVE-2017-6736 is a high-severity vulnerability in the SNMP subsystem of Cisco IOS and IOS XE software that allows an authenticated remote attacker to execute code remotely. This vulnerability has been exploited in the wild. No specific affected versions or patch information is provided in the available data.

Summary

The Simple Network Management Protocol (SNMP) subsystem in Cisco IOS and IOS XE software contains a vulnerability (CVE-2017-6736) that permits an authenticated remote attacker to execute arbitrary code remotely. The vulnerability is related to improper handling within the SNMP subsystem, classified under CWE-119 (improper restriction of operations within the bounds of a memory buffer). Exploitation of this flaw has been observed in the wild, indicating active threat usage. No detailed version or patch information is provided in the source data.

Impact

Successful exploitation allows an authenticated remote attacker to execute arbitrary code on affected Cisco IOS and IOS XE devices, potentially leading to full system compromise. The vulnerability has been exploited in the wild, increasing the risk to affected environments.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or workaround information is provided, users should consult Cisco's official security advisories for updates and apply recommended fixes or mitigations as soon as they become available.

Weaknesses

CWE-119Buffer Errors (Memory Bounds) (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 10:27:35 UTC

Weaknesses

References

Related threats