critical Known exploitedREV. 01
CVE-2020-25506D-Link DNS-320 Command Injection — Unauthenticated Device Takeover
A command injection flaw in the web management interface of D-Link's network storage appliance (DNS-320) lets an attacker who can reach the device over the network run arbitrary system commands on it, with no credentials required.
Read the risk
THE VITAL STATS- CVSS score
- 9.8/ 10 CVSS v3.1
- EPSS probability
- 100% Likelihood of exploitation
- Attack complexity
- Low Conditions needed to exploit
- Known exploited
- Yes — CISA KEV
- CVE published
- 2021-02-02
- Added to KEV
- 2021-11-03
- Exploit published
- Yes
- Confidence
- high
- Kill chain
- initial access
- MITRE ATT&CK
- T1190, T1059
- Severity
- critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attacker needsNetwork access to the device's web management interface
Behind the card
4 REFERENCES- 01CVE recordNVD recordnvd.nist.gov
- 02Vendor advisoryD-Link support announcement SAP10183supportannouncement.us.dlink.com
- 03CISACISA Known Exploited Vulnerabilities entrycisa.gov
- 04ExploitPublic proof of conceptgist.github.com
Field-level provenanceTRACE THE SOURCES +
Which source supports each field, when it was retrieved, and who extracted it.
| Fields | Source | Retrieved | Extractor | Confidence |
|---|---|---|---|---|
| cvss, references, exploitation.attack_complexity | nvd.nist.gov | 2026-08-07 | claude-code | high |
| exploitation.known_exploited, remediation.patch_available | cisa.gov | 2026-08-07 | claude-code | high |
| epss | api.first.org | 2026-08-07 | claude-code | high |
| title, summary, recommended_action, severity, kill_chain, mitre_attack, exploitation.prerequisites, exploitation.exploit_available, tags | nvd.nist.gov | 2026-08-07 | claude-code | high |
Printing history
THE RECORD- r1Initial base card
First printing. This card has not been reprinted since publication.