Access control flaw in Cisco IOS XE
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-264.
Summary
A vulnerability in the web-based Wireless Controller GUI of Cisco IOS XE Software for Cisco 5760 Wireless LAN Controllers, Cisco Catalyst 4500E Supervisor Engine 8-E (Wireless) Switches, and Cisco New Generation Wireless Controllers (NGWC) 3850 could allow an authenticated, remote attacker to elevate their privileges on an affected device. The vulnerability is due to incomplete input validation of HTTP requests by the affected GUI, if the GUI connection state or protocol changes. An attacker could exploit this vulnerability by authenticating to the Wireless Controller GUI as a Lobby Administrator user of an affected device and subsequently changing the state or protocol for their connection to the GUI. A successful exploit could allow the attacker to elevate their privilege level to administrator and gain full control of the affected device. This vulnerability affects the following Cisco products if they are running Cisco IOS XE Software Release 3.7.0E, 3.7.1E, 3.7.2E, 3.7.3E, 3.7.4E, or 3.7.5E: Cisco 5760 Wireless LAN Controllers, Cisco Catalyst 4500E Supervisor Engine 8-E (Wireless) Switches, Cisco New Generation Wireless Controllers (NGWC) 3850. Cisco Bug IDs: CSCvd73746.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Cisco IOS XE | Cisco IOS XE | — | No fix listed | CNA |
- Cisco IOS XE Vendor— Affected Cisco IOS XE Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:ios_xe:3.7.0e:*:*:*:*:*:*:* | 3.7.0e | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xe:3.7.1e:*:*:*:*:*:*:* | 3.7.1e | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xe:3.7.2e:*:*:*:*:*:*:* | 3.7.2e | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xe:3.7.3e:*:*:*:*:*:*:* | 3.7.3e | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xe:3.7.4e:*:*:*:*:*:*:* | 3.7.4e | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xe:3.7.5e:*:*:*:*:*:*:* | 3.7.5e | Vulnerable | Cisco |
- cpe:2.3:o:cisco:ios_xe:3.7.0e:*:*:*:*:*:*:* Versions 3.7.0e Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xe:3.7.1e:*:*:*:*:*:*:* Versions 3.7.1e Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xe:3.7.2e:*:*:*:*:*:*:* Versions 3.7.2e Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xe:3.7.3e:*:*:*:*:*:*:* Versions 3.7.3e Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xe:3.7.4e:*:*:*:*:*:*:* Versions 3.7.4e Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xe:3.7.5e:*:*:*:*:*:*:* Versions 3.7.5e Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-12226
- 2026-10-03 Alias added: GHSA-4768-jwrj-c8p2
References
More Cisco Ios Xe vulnerabilities
- TI-2023-06904 Cisco is providing an update for the ongoing investigation into observed exploitation of… KEVCVSS 3.1CRITICAL 10.0
- TI-2018-00122 Memory corruption in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
- TI-2017-02977 Improper input validation in Cisco IOS and IOS XE Software KEVCVSS 3.1CRITICAL 9.8
- TI-2018-00135 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.8
- TI-2017-04498 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
- TI-2017-04497 Memory corruption in Cisco IOS XE Software KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2017-12226 · CVE Program
- CVE-2017-12226 · NVD
- FIRST EPSS
- GHSA-4768-jwrj-c8p2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences