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CVE-2017-12229

CRITICAL

A vulnerability in the REST API of the web-based user interface (web UI) of Cisco IOS XE 3.1 through 16.5 could allow an unauthenticated, remote attacker to bypass authentication to the REST API of the web UI of the affected software. The vulnerability is due to insufficient input validation for the REST API of the affected software. An attacker could exploit this vulnerability by sending a malicious API request to an affected device. A successful exploit could allow the attacker to bypass authentication and gain access to the web UI of the affected software. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS XE Software, if the HTTP Server feature is enabled for the device. The newly redesigned, web-based administration UI was introduced in the Denali 16.2 Release of Cisco IOS XE Software. This vulnerability does not affect the web-based administration UI in earlier releases of Cisco IOS XE Software. Cisco Bug IDs: CSCuz46036.

Published: Sep 29, 2017 Modified: Jun 17, 2026
CWE-287 CWE-287

CVSS Metrics

CVSSv3
Attack Vector: NETWORK Attack Complexity: LOW Privileges Required: NONE User Interaction: NONE Scope: UNCHANGED Confidentiality Impact: HIGH Integrity Impact: HIGH Availability Impact: HIGH

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

Affected Products (17)

Vendor Product Version
cisco ios_xe 3.1.3as
cisco ios_xe 3.2.0ja
cisco ios_xe 3.2.1xo
cisco ios_xe 3.4.7asg
cisco ios_xe 3.6.5be
cisco ios_xe 3.8.0ex
cisco ios_xe 3.18.3vs
cisco ios_xe 16.1.1
cisco ios_xe 16.1.2
cisco ios_xe 16.1.3
cisco ios_xe 16.1.3a
cisco ios_xe 16.1.4
cisco ios_xe 16.2.1
cisco ios_xe 16.2.2a
cisco ios_xe 16.3.1a
cisco ios_xe 16.5.1a
cisco ios_xe 16.5.1c

GitHub Security Advisory GHSA-4ppq-5752-xrxr

A vulnerability in the REST API of the web-based user interface (web UI) of Cisco IOS XE 3.1...

Risk Scores

CVSS Score 9.8 / 10
EPSS Score 5.12%

Top 8% most likely to be exploited

Threat Score 40.7 / 100

Data Sources

NVD EPSS GitHub