Security Digest · Vulnerability record · Known exploited
CVE-2016-20017: D-Link DSL-2750B Devices Command Injection Vulnerability
Exploited in the wild (CISA KEV). 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.
CISA KEV · added 2024-01-08 CVSS 9.8 Critical EPSS 66.6% · p99
Should you act?
Exploited: patch now if you run it
CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- Yes, if you run D-Link DSL-2750B Devices. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2024-01-08, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2024-01-29; treat that as the outer limit, not the target.
- EPSS 66.6%, percentile 99: FIRST’s model estimates a 66.6% chance of exploitation activity in the next 30 days, higher than 99% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
What it is
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.
CISA’s summary
D-Link DSL-2750B devices contain a command injection vulnerability that allows remote, unauthenticated command injection via the login.cgi cli parameter.
Weakness type: CWE-77.
Product: D-Link DSL-2750B Devices · Assigned by: mitre · Published: 2022-10-19
Affected and fixed versions
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| n/a | n/a | see vendor advisory |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADP | 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: none
- Scope: unchanged
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: added 2024-01-08; federal due date 2024-01-29. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active, automatable yes, technical impact total.
- FIRST EPSS (model of 2026-10-21): 66.58% probability of exploitation activity in the next 30 days; percentile 99.
Timeline
- — CVE record published by mitre
- — Added to CISA’s Known Exploited Vulnerabilities catalog
- — CISA remediation deadline for US federal agencies
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vendor and project advisories, patches
- Listed in CISA KEV notes (supportannouncement.us.dlink.com) supportannouncement.us.dlink.com
Vulnerability records
- CVE.org record CVE-2016-20017 cve.org
- NVD entry CVE-2016-20017 nvd.nist.gov
Government
Other references from the CVE record and advisory
- seclists.org seclists.org
- exploit-db.com exploit-db.com
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