CVE-2018-0151VulnerabilityPublished 03/03/2022Updated 10/24/2026

CVE-2018-0151: Cisco IOS Software and Cisco IOS XE Software Quality of Service 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: 03/17/2022
EPSS: 14.2% chance of exploitation in 30 days – higher than 96% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2018-0151 (opens in a new tab)

Description

CVE-2018-0151 is a high-severity vulnerability in the Quality of Service (QoS) subsystem of Cisco IOS and IOS XE Software. It allows an unauthenticated remote attacker to cause denial of service or execute arbitrary code with elevated privileges. This vulnerability has been exploited in the wild. No specific affected versions or patch information are provided in the available data.

Summary

The vulnerability exists in the QoS subsystem of Cisco IOS and IOS XE Software, enabling unauthenticated remote attackers to cause a denial of service or execute arbitrary code with elevated privileges. The flaw is identified as CWE-119, indicating a memory safety issue such as a buffer overflow. Exploitation has been observed in the wild, highlighting active threat. However, no explicit patch or remediation details are included in the provided information.

Impact

Successful exploitation can lead to denial of service or remote code execution with elevated privileges on affected Cisco IOS and IOS XE devices. This compromises device availability and potentially full control over the affected system. The vulnerability is actively exploited in the wild, increasing the risk to organizations using these Cisco products.

Mitigation

Patch status is not yet confirmed — check the Cisco vendor advisory for current remediation guidance. Until official fixes are confirmed and applied, monitor Cisco security advisories for updates. No vendor advisory or patch links were provided in the input data.

Weaknesses

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

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 10:40:35 UTC

Weaknesses

References

Related threats