Cross-site scripting in PLANEX COMMUNICATIONS INC. MZK-DP300N
Priority LOW 22CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
Cross-site scripting vulnerability exists in MZK-DP300N firmware versions 1.05 and earlier. If an attacker logs in to the affected product and manipulates the device settings, an arbitrary script may be executed on the logged-in user's web browser when accessing a crafted URL.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00303 23rd 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 |
|---|---|---|---|---|---|
| PLANEX COMMUNICATIONS INC. | MZK-DP300N | firmware versions 1.05 and earlier | — | No fix listed | CNA |
- MZK-DP300N VendorPLANEX COMMUNICATIONS INC. Affected firmware versions 1.05 and earlier Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-21603
- 2026-10-03 Alias added: GHSA-34w5-cvqh-fxgw
References
More PLANEX COMMUNICATIONS INC. vulnerabilities
- TI-2013-05137 The web interface on D-Link DIR-100, DIR-120, DI-624S, DI-524UP, DI-604S, DI-604UP… CVSS 2.0HIGH 10.0
- TI-2017-09302 An issue was discovered on PLANEX CS-W50HD devices with firmware before 030720. CVSS 3.0CRITICAL 9.8
- TI-2017-09305 An issue was discovered on the PLANEX CS-QR20 1.30. CVSS 3.0CRITICAL 9.8
- TI-2021-03324 PLANEX CS-QP50F-ING2 Smart Camera Remote Configuration Disclosure CVSS 4.0HIGH 8.7
- TI-2017-09301 An issue was discovered on PLANEX CS-W50HD devices with firmware before 030720. CVSS 3.0HIGH 8.8
- TI-2024-19966 Command injection in PLANEX COMMUNICATIONS INC. MZK-MF300N CVSS 3.1HIGH 8.8
Sources
- CVE-2025-21603 · CVE Program
- CVE-2025-21603 · NVD
- FIRST EPSS
- GHSA-34w5-cvqh-fxgw · 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