CVE-2019-17621The 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…
Updated under an hour ago ()
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It affects dlink dir-859_firmware and 13 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Jun 29, 2023; federal agencies had to remediate by Jul 20, 2023. Treat that date as your deadline.
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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.
- CVSS
- 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-78
- Known exploited
- Added to CISA KEV Jun 29, 2023; federal remediation due Jul 20, 2023Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
- EPSS (exploitation in the next 30 days)
- 89.62% (percentile 100)
- Assigned by
- mitre
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
dlink dir-859_firmware dlink:dir-859_firmware | through 1.05b03; 1.06b01 | NVD |
dlink dir-822_firmware dlink:dir-822_firmware | through 2.03b01; through 3.12b04 | NVD |
dlink dir-823_firmware dlink:dir-823_firmware | through 1.00b06; 1.00b06 | NVD |
dlink dir-865l_firmware dlink:dir-865l_firmware | through 1.07b01 | NVD |
dlink dir-868l_firmware dlink:dir-868l_firmware | through 1.12b04; through 2.05b02 | NVD |
dlink dir-869_firmware dlink:dir-869_firmware | through 1.03b02; 1.03b02 | NVD |
dlink dir-880l_firmware dlink:dir-880l_firmware | through 1.08b04 | NVD |
dlink dir-890l_firmware dlink:dir-890l_firmware | through 1.11b01; 1.11b01 | NVD |
dlink dir-890r_firmware dlink:dir-890r_firmware | through 1.11b01; 1.11b01 | NVD |
dlink dir-885l_firmware dlink:dir-885l_firmware | through 1.12b05 | NVD |
dlink dir-885r_firmware dlink:dir-885r_firmware | through 1.12b05 | NVD |
dlink dir-895l_firmware dlink:dir-895l_firmware | through 1.12b10 | NVD |
dlink dir-895r_firmware dlink:dir-895r_firmware | through 1.12b10 | NVD |
dlink dir-818lx_firmware dlink:dir-818lx_firmware | all versions | NVD |
References
- https://www.ftc.gov/system/files/documents/cases/dlink_proposed_order_and_judgment_7-2-19.pdfx-refsource-misc, third-party-advisory, us-government-resource
- https://www.dlink.com/en/security-bulletinx-refsource-misc, vendor-advisory
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10147x-refsource-confirm, patch, vendor-advisory
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10146x-refsource-confirm, patch, vendor-advisory
- https://medium.com/%40s1kr10s/d-link-dir-859-rce-unautenticated-cve-2019-17621-en-d94b47a15104x-refsource-misc, exploit, third-party-advisory
- https://medium.com/%40s1kr10s/d-link-dir-859-rce-unautenticated-cve-2019-17621-es-fad716629ff9x-refsource-misc, broken-link
- http://packetstormsecurity.com/files/156054/D-Link-DIR-859-Unauthenticated-Remote-Command-Execution.htmlx-refsource-misc, exploit, third-party-advisory, vdb-entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-17621us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.