AEGLIX vulnerability intelligence
CVE-2018-0171
CRITICAL · CVSS 9.8 · Analyzed
Published: 2018-03-28 · Updated: 2026-06-17 · Source: NVD
Vulnerability overview
A vulnerability in the Smart Install feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition, or to execute arbitrary code on an affected device. The vulnerability is due to improper validation of packet data. An attacker could exploit this vulnerability by sending a crafted Smart Install message to an affected device on TCP port 4786. A successful exploit could allow the attacker to cause a buffer overflow on the affected device, which could have the following impacts: Triggering a reload of the device, Allowing the attacker to execute arbitrary code on the device, Causing an indefinite loop on the affected device that triggers a watchdog crash. Cisco Bug IDs: CSCvg76186.
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-20, CWE-787
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
- Added to catalog
- 2021-11-03
- Required action
- Apply updates per vendor instructions.
- CISA remediation due date
- 2022-05-03
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:15.2\(5\)e:*:*:*:*:*:*:*
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/103538
Third Party Advisory · VDB Entry
- http://www.securitytracker.com/id/1040580
Third Party Advisory · VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04
Third Party Advisory · US Government Resource
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05
Third Party Advisory · US Government Resource
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-smi2
Vendor Advisory
- https://www.darkreading.com/perimeter/attackers-exploit-cisco-switch-issue-as-vendor-warns-of-yet-another-critical-flaw/d/d-id/1331490
Press/Media Coverage
- http://www.securityfocus.com/bid/103538
Third Party Advisory · VDB Entry
- http://www.securitytracker.com/id/1040580
Third Party Advisory · VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04
Third Party Advisory · US Government Resource
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05
Third Party Advisory · US Government Resource
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-smi2
Vendor Advisory
- https://www.darkreading.com/perimeter/attackers-exploit-cisco-switch-issue-as-vendor-warns-of-yet-another-critical-flaw/d/d-id/1331490
Press/Media Coverage
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0171
US Government Resource