What is CVE-2016-20017?

CVE-2016-20017 is a critical-severity vulnerability in Dlink Dsl-2750b, classified under Command Injection. CVSS score: 9.8/10. Published 2022-10-19.

How severe is CVE-2016-20017?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2016-20017 known to be exploited?

Yes. CVE-2016-20017 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-01-08), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.

RCE in Dlink Dsl-2750b

CVE-2016-20017

D-Link DSL-2750B devices before 1.05 allow remote unauthenticated command injection via the login.cgi cli parameter, as exploited in the wild in 2016 through 2022.

Vulnerability class: Command Injection (OS Command Injection)

Published 2022-10-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.666 (99.3th percentile), scored 2026-10-19.

High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.652 · newest: 0.666 · change: +0.013

Affected products

Weakness classification (CWE)

CWE-77 — Command Injection

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2024-01-08. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2024-01-29.

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Public proof-of-concept exploits

References

supportannouncement.us.dlink.com/announcement/publication.aspx (Patch, Vendor Advisory)
seclists.org/fulldisclosure/2016/Feb/53 (Exploit, Mailing List, Third Party Advisory)
www.exploit-db.com/exploits/44760 (Exploit, VDB Entry, Third Party Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2016-20017?: CVE-2016-20017 is a critical-severity vulnerability in Dlink Dsl-2750b, classified under Command Injection. CVSS score: 9.8/10. Published 2022-10-19.
How severe is CVE-2016-20017?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2016-20017 known to be exploited?: Yes. CVE-2016-20017 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-01-08), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.