CVE-2020-25506
D-Link DNS-320 Device Command Injection Vulnerability
- Critical 9.8
- Exploited: added to CISA KEV 3 Nov 2021
Description
D-Link DNS-320 FW v2.06B01 Revision Ax is affected by command injection in the system_mgr.cgi component, which can lead to remote arbitrary code execution.
Key facts
- Published
- 2 Feb 2021
- Last changed
- 21 Oct 2025
- Assigned by
- mitre
- KEV added
- 3 Nov 2021
- KEV fix due
- 3 May 2022
- EPSS
- 99.968% likely to be exploited in the next 30 days, higher than 99.977% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: yes; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 9.8CVSS 3.1, Criticalfrom CISA (ADP container)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a |
|
Timeline
- 2 Feb 2021 Published
- 3 Nov 2021 CVE-2020-25506 added to CISA KEV
- 3 Nov 2021 Added to the CISA KEV catalogue
Weakness
Practice this bug class
HackZoneLabs has a hands-on lab on OS command injection (CWE-78).