ExtremeControl (NAC) 'onmouseover' XSS
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
In ExtremeControl before 25.5.12, a cross-site scripting (XSS) vulnerability was discovered in a login interface of the affected application. The issue stems from improper handling of user-supplied input within HTML attributes, allowing an attacker to inject script code that may execute in a user's browser under specific interaction conditions. Successful exploitation could lead to exposure of user data or unauthorized actions within the browser context.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- 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 |
|---|---|---|---|---|---|
| Extreme Networks | ExtremeControl | 25.2.12 to before 25.5.11 | 25.5.11 | Patch available | CNA |
- ExtremeControl VendorExtreme Networks Affected 25.2.12 to before 25.5.11 Fixed in 25.5.11 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:extremenetworks:extremecontrol:*:*:*:*:*:*:*:* | before 25.5.12 | Vulnerable | Extreme Networks |
- cpe:2.3:a:extremenetworks:extremecontrol:*:*:*:*:*:*:*:* Versions before 25.5.12 Vulnerable ·Extreme Networks
Remediation
- Fix · CNA ExtremeControl (Extreme Networks) Fixed in 25.5.11
Timeline
- 2026-10-02 Threatist record created from CVE-2025-6235
- 2026-10-03 Alias added: GHSA-7x23-63hm-q73v
References
Sources
- CVE-2025-6235 · CVE Program
- CVE-2025-6235 · NVD
- FIRST EPSS
- GHSA-7x23-63hm-q73v · 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