CVE-2019-17621: D-Link DIR-859 Router Command Execution Vulnerability
Vulnerability summary
CVE-2019-17621 is a high (CVSS 10.0) OS Command Injection vulnerability in D-Link DIR-859 Router. It is known to be exploited: CISA lists it, first on 29-06-2023. EPSS estimates a 89.62% chance of exploitation in the next 30 days, higher than 99.7% of scored vulnerabilities. 3 public exploits are recorded.
Timeline
- 30-12-2019PublishedVulnerability first disclosed.
- 29-06-2023Added to CISA KEVD-Link DIR-859 Router Command Execution Vulnerability
- 20-07-2023CISA remediation dueApply updates per vendor instructions or discontinue use of the product if updates are unavailable.
- 21-10-2025Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
89.62%
Chance of exploitation in the next 30 days
Percentile
100%
Versus all other CVEs
30-day change
0.00 pp
From 89.62% on 19-09-2026
Known exploited
Compare KEV catalogs
CISA KEVListed- Added
- 29-06-2023
- Federal due date
- 20-07-2023
CISA required action
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable. supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10147 nvd.nist.gov/vuln/detail/CVE-2019-17621
Public exploits
3 foundExploit Reference (medium.com)
Maturity: unknown
Exploit Reference (packetstormsecurity.com)
Maturity: unknown
D-Link DIR-859 Unauthenticated Remote Command Execution
exploit/linux/upnp/dlink_dir859_subscribe_exec
Maturity: weaponized
Weaknesses
CWE · root causeAffected systems
Dlink14 products
- dir-818lx_firmwarena
- dir-822_firmware≤ 2.03b01 | ≤ 3.12b04
- dir-823_firmware≤ 1.00b06 | 1.00b06:beta
- dir-859_firmware≤ 1.05b03 | 1.06b01:beta1
- dir-865l_firmware≤ 1.07b01
1 vendor · 14 products
References
8 links- www.ftc.gov/system/files/documents/cases/dlink_proposed_order_and_judgment_7-2-19.pdfX Refsource MISCThird Party AdvisoryUS Government Resource
- supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10147X Refsource CONFIRMPatchVendor Advisory
- supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10146X Refsource CONFIRMPatchVendor Advisory
- medium.com/%40s1kr10s/d-link-dir-859-rce-unautenticated-cve-2019-17621-en-d94b47a15104X Refsource MISCExploitThird Party Advisory
- medium.com/%40s1kr10s/d-link-dir-859-rce-unautenticated-cve-2019-17621-es-fad716629ff9X Refsource MISCBroken Link
- packetstormsecurity.com/files/156054/D-Link-DIR-859-Unauthenticated-Remote-Command-Execution.htmlX Refsource MISCExploitThird Party AdvisoryVDB Entry
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-17621Government ResourceUS Government Resource