AEGLIX vulnerability intelligence
CVE-2018-0151
CRITICAL · CVSS 9.8 · Analyzed
Published: 2018-03-28 · Updated: 2026-06-17 · Source: NVD
Vulnerability overview
A vulnerability in the quality of service (QoS) subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges. The vulnerability is due to incorrect bounds checking of certain values in packets that are destined for UDP port 18999 of an affected device. An attacker could exploit this vulnerability by sending malicious packets to an affected device. When the packets are processed, an exploitable buffer overflow condition may occur. A successful exploit could allow the attacker to execute arbitrary code on the affected device with elevated privileges. The attacker could also leverage this vulnerability to cause the device to reload, causing a temporary DoS condition while the device is reloading. The malicious packets must be destined to and processed by an affected device. Traffic transiting a device will not trigger the vulnerability. Cisco Bug IDs: CSCvf73881.
Severity and scoring
- CVSS score
- 9.8 · CRITICAL
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-119
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Cisco · IOS and IOS XE Software
- Added to catalog
- 2022-03-03
- Required action
- Apply updates per vendor instructions.
- CISA remediation due date
- 2022-03-17
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:o:cisco:ios_xe:16.5.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:-:*:*:*:*:*:*:*
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- http://www.securityfocus.com/bid/103540
Third Party Advisory · VDB Entry
- http://www.securitytracker.com/id/1040582
Third Party Advisory · VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-03
Third Party Advisory · US Government Resource
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-qos
Mitigation · Vendor Advisory
- http://www.securityfocus.com/bid/103540
Third Party Advisory · VDB Entry
- http://www.securitytracker.com/id/1040582
Third Party Advisory · VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-03
Third Party Advisory · US Government Resource
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-qos
Mitigation · Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0151
US Government Resource