Improper access control in Cisco IOS XE Software
Priority LOW 29CWE-284Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.
Summary
A vulnerability in the lobby ambassador web interface of Cisco IOS XE Wireless Controller Software could allow an authenticated, remote attacker to remove arbitrary users that are defined on an affected device. This vulnerability is due to insufficient access control of actions executed by lobby ambassador users. An attacker could exploit this vulnerability by logging in to an affected device with a lobby ambassador user account and sending crafted HTTP requests to the API. A successful exploit could allow the attacker to delete arbitrary user accounts on the device, including users with administrative privileges. Note: This vulnerability is exploitable only if the attacker obtains the credentials for a lobby ambassador account. This account is not configured by default.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00425 36th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco IOS XE Software | 17.6.8; 17.9.6; 17.9.6a; 17.12.1z2; 17.12.1z3; 17.15.1; 17.15.1x | — | No fix listed | CNA |
- Cisco IOS XE Software VendorCisco Affected 17.6.8; 17.9.6; 17.9.6a; 17.12.1z2; 17.12.1z3; 17.15.1; 17.15.1x Fixed in — No fix listed CNA
CPE configurations NVD · 23
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:ios_xe:17.6.8:*:*:*:*:*:*:* | 17.6.8 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xe:17.9.6:*:*:*:*:*:*:* | 17.9.6 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xe:17.9.6a:*:*:*:*:*:*:* | 17.9.6a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xe:17.12.1z2:*:*:*:*:*:*:* | 17.12.1z2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xe:17.12.1z3:*:*:*:*:*:*:* | 17.12.1z3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xe:17.15.1:*:*:*:*:*:*:* | 17.15.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xe:17.15.1x:*:*:*:*:*:*:* | 17.15.1x | Vulnerable | Cisco |
| cpe:2.3:a:cisco:catalyst_9800-cl_wireless_controllers_for_cloud:*:*:*:*:*:*:*:* | all versions | Running on | Cisco |
| cpe:2.3:h:cisco:catalyst_9105axi:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:catalyst_9115axe:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:o:cisco:ios_xe:17.6.8:*:*:*:*:*:*:* Versions 17.6.8 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xe:17.9.6:*:*:*:*:*:*:* Versions 17.9.6 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xe:17.9.6a:*:*:*:*:*:*:* Versions 17.9.6a Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xe:17.12.1z2:*:*:*:*:*:*:* Versions 17.12.1z2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xe:17.12.1z3:*:*:*:*:*:*:* Versions 17.12.1z3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xe:17.15.1:*:*:*:*:*:*:* Versions 17.15.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xe:17.15.1x:*:*:*:*:*:*:* Versions 17.15.1x Vulnerable ·Cisco
- cpe:2.3:a:cisco:catalyst_9800-cl_wireless_controllers_for_cloud:*:*:*:*:*:*:*:* Versions all versions Running on ·Cisco
- cpe:2.3:h:cisco:catalyst_9105axi:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:catalyst_9115axe:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Show 13 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:cisco:catalyst_9115axi:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:catalyst_9117axi:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:catalyst_9120axe:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:catalyst_9120axi:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:catalyst_9120axp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:catalyst_9130axe:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:catalyst_9130axi:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:catalyst_9800-40:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:catalyst_9800-80:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:catalyst_9800-l:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:catalyst_cw9800h1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:catalyst_cw9800h2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:catalyst_cw9800m:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:h:cisco:catalyst_9115axi:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:catalyst_9117axi:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:catalyst_9120axe:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:catalyst_9120axi:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:catalyst_9120axp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:catalyst_9130axe:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:catalyst_9130axi:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:catalyst_9800-40:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:catalyst_9800-80:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:catalyst_9800-l:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:catalyst_cw9800h1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:catalyst_cw9800h2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:catalyst_cw9800m:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-20190
- 2026-10-03 Alias added: GHSA-q4xx-mxw3-33fm
References
Advisory 1
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-2025-20190 · CVE Program
- CVE-2025-20190 · NVD
- FIRST EPSS
- GHSA-q4xx-mxw3-33fm · 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