CVE-2019-17621
dlink dir-859 firmware, dlink dir-822 firmware, dlink dir-823 firmware
Published 30 Dec 2019 · updated 17 Jun 2026 · Analyzed
9.8 Critical · CVSS 3.1, NVD
Exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on 29 Jun 2023, with a remediation deadline of 20 Jul 2023 for US federal agencies.
Required action: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
Description
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 service when connecting to the local network.
References
- packetstormsecurity.com/files/156054/D-Link-DIR-859-Unauthenticated-Remote-Command-Execution.html · Exploit, Third Party Advisory, VDB Entry
- medium.com/%40s1kr10s/d-link-dir-859-rce-unautenticated-cve-2019-17621-en-d94b47a15104 · Exploit, Third Party Advisory
- medium.com/%40s1kr10s/d-link-dir-859-rce-unautenticated-cve-2019-17621-es-fad716629ff9 · Broken Link
- supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10146 · Patch, Vendor Advisory
- supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10147 · Patch, Vendor Advisory
- www.dlink.com/en/security-bulletin · Vendor Advisory
- www.ftc.gov/system/files/documents/cases/dlink_proposed_order_and_judgment_7-2-19.pdf · Third Party Advisory, US Government Resource
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-17621 · US Government Resource