RCE in Dlink Dir-818lx
CVE-2019-17621
The UPnP endpoint URL /gena.cgi in the D-Link DIR-859 Wi-Fi router 1.05 and 1.06B01 Beta01 allows an Unauthenticated remote attacker to execute system commands as root, by sending a specially crafted HTTP SUBSCRIBE request to the UPnP serv…
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.896 (99.8th percentile) — read the EPSS interpretation.
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.
Affected products
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . 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: .
Required action: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
Public proof-of-concept exploits
References
- cve@mitre.org (US Government Resource, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Vendor Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Vendor Advisory)
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_MISC, Broken Link)
- cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2019-17621?
- CVE-2019-17621 is a critical-severity vulnerability in Dlink Dir-818lx, classified under OS Command Injection. CVSS score: 9.8/10. Published 2019-12-30.
- How severe is CVE-2019-17621?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-17621 known to be exploited?
- Yes. CVE-2019-17621 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-06-29), indicating it is being actively exploited. 38 public proof-of-concept repositories are indexed.