CVE-2017-12211

MEDIUM

Cisco IOS and IOS XE - Denial of Service via IPv6 SNMP Polling

Title source: llm

Description

A vulnerability in the IPv6 Simple Network Management Protocol (SNMP) code of Cisco IOS and Cisco IOS XE Software could allow an authenticated, remote attacker to cause high CPU usage or a reload of the device. The vulnerability is due to IPv6 sub block corruption. An attacker could exploit this vulnerability by polling the affected device IPv6 information. An exploit could allow the attacker to trigger high CPU usage or a reload of the device. Known Affected Releases: Denali-16.3.1. Cisco Bug IDs: CSCvb14640.

References (4)

Core 4

Core References

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/100648

Vendor Advisory x_refsource_confirm

https://quickview.cloudapps.cisco.com/quickview/bug/CSCvb14640

Vendor Advisory x_refsource_confirm

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906-snmp

Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack

http://www.securitytracker.com/id/1039290

Scores

CVSS v3 5.3

EPSS 0.0165

EPSS Percentile 73.9%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE

CWE-399

Status published

Products (3)

cisco/ios 3.16.1

cisco/ios_xe 3.16.1

n/a/Cisco IOS and Cisco IOS XE Cisco IOS and Cisco IOS XE

Published Sep 07, 2017

Tracked Since Feb 18, 2026