CVE-2019-17621

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2023-06-29), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 90%CVSS: 9.8Exploit: cisa kev · ssvc active · Metasploit · epss top5pct · epss high · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
90%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

December 30, 2019

Last Modified

November 7, 2025

Advisory Details (5)

Auto-updated Sep 17, 2026
No patch confirmed yet.
generic

Packet Storm Security

http://packetstormsecurity.com/files/156054/D-Link-DIR-859-Unauthenticated-Remote-Command-Execution.html
generic
https://www.ftc.gov/system/files/documents/cases/dlink_proposed_order_and_judgment_7-2-19.pdf
generic

Security Bulletin | D-Link

https://www.dlink.com/en/security-bulletin
generic

D-Link Technical Support

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10147
generic

D-Link Technical Support

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10146

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 52× in last 7d / 225× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 812 total refreshes for this CVE.

  1. 2026-09-20 17:30 UTCGHSA enrichment
  2. 2026-09-20 13:36 UTCGHSA enrichment
  3. 2026-09-20 09:45 UTCGHSA enrichment
  4. 2026-09-20 05:54 UTCGHSA enrichment
  5. 2026-09-20 02:03 UTCGHSA enrichment
  6. 2026-09-19 22:11 UTCGHSA enrichment
  7. 2026-09-19 18:20 UTCGHSA enrichment
  8. 2026-09-19 14:29 UTCGHSA enrichment
  9. 2026-09-19 10:37 UTCGHSA enrichment
  10. 2026-09-19 06:40 UTCGHSA enrichment
  11. 2026-09-19 02:49 UTCGHSA enrichment
  12. 2026-09-18 22:57 UTCGHSA enrichment
  13. 2026-09-18 19:20 UTCCISA KEV update
  14. 2026-09-18 19:06 UTCGHSA enrichment
  15. 2026-09-18 15:15 UTCGHSA enrichment
  16. 2026-09-18 14:15 UTCCISA KEV update
  17. 2026-09-18 11:24 UTCGHSA enrichment
  18. 2026-09-18 07:33 UTCGHSA enrichment
  19. 2026-09-18 03:42 UTCGHSA enrichment
  20. 2026-09-17 23:50 UTCGHSA enrichment
  21. 2026-09-17 19:58 UTCEG score recompute
  22. 2026-09-17 19:58 UTCGHSA enrichment
  23. 2026-09-17 19:22 UTCEPSS rescore
  24. 2026-09-17 16:07 UTCGHSA enrichment
  25. 2026-09-17 12:16 UTCGHSA enrichment
Show 75 more
  1. 2026-09-17 08:25 UTCGHSA enrichment
  2. 2026-09-17 04:34 UTCGHSA enrichment
  3. 2026-09-17 00:43 UTCGHSA enrichment
  4. 2026-09-16 20:51 UTCGHSA enrichment
  5. 2026-09-16 16:55 UTCGHSA enrichment
  6. 2026-09-16 14:10 UTCCISA KEV update
  7. 2026-09-16 13:03 UTCGHSA enrichment
  8. 2026-09-16 09:12 UTCGHSA enrichment
  9. 2026-09-16 05:21 UTCGHSA enrichment
  10. 2026-09-16 01:30 UTCGHSA enrichment
  11. 2026-09-15 21:38 UTCGHSA enrichment
  12. 2026-09-15 17:47 UTCGHSA enrichment
  13. 2026-09-15 13:56 UTCGHSA enrichment
  14. 2026-09-15 10:05 UTCGHSA enrichment
  15. 2026-09-15 06:13 UTCEG score recompute
  16. 2026-09-15 06:12 UTCGHSA enrichment
  17. 2026-09-15 03:05 UTCEPSS rescore
  18. 2026-09-15 02:20 UTCGHSA enrichment
  19. 2026-09-14 22:29 UTCGHSA enrichment
  20. 2026-09-14 19:24 UTCCISA KEV update
  21. 2026-09-14 18:37 UTCGHSA enrichment
  22. 2026-09-14 14:45 UTCGHSA enrichment
  23. 2026-09-14 10:54 UTCGHSA enrichment
  24. 2026-09-14 07:03 UTCGHSA enrichment
  25. 2026-09-14 03:12 UTCGHSA enrichment
  26. 2026-09-13 23:21 UTCGHSA enrichment
  27. 2026-09-13 19:30 UTCGHSA enrichment
  28. 2026-09-13 15:39 UTCGHSA enrichment
  29. 2026-09-13 11:48 UTCGHSA enrichment
  30. 2026-09-13 07:57 UTCGHSA enrichment
  31. 2026-09-13 04:06 UTCGHSA enrichment
  32. 2026-09-13 00:15 UTCGHSA enrichment
  33. 2026-09-12 20:24 UTCGHSA enrichment
  34. 2026-09-12 16:33 UTCGHSA enrichment
  35. 2026-09-12 12:42 UTCGHSA enrichment
  36. 2026-09-12 08:51 UTCGHSA enrichment
  37. 2026-09-12 05:00 UTCGHSA enrichment
  38. 2026-09-12 01:09 UTCGHSA enrichment
  39. 2026-09-11 21:18 UTCGHSA enrichment
  40. 2026-09-11 18:49 UTCCISA KEV update
  41. 2026-09-11 17:27 UTCGHSA enrichment
  42. 2026-09-11 13:36 UTCGHSA enrichment
  43. 2026-09-11 09:45 UTCEG score recompute
  44. 2026-09-11 09:45 UTCGHSA enrichment
  45. 2026-09-11 09:32 UTCEPSS rescore
  46. 2026-09-11 05:54 UTCGHSA enrichment
  47. 2026-09-11 02:03 UTCGHSA enrichment
  48. 2026-09-10 22:12 UTCGHSA enrichment
  49. 2026-09-10 19:28 UTCCISA KEV update
  50. 2026-09-10 18:21 UTCGHSA enrichment
  51. 2026-09-10 14:29 UTCGHSA enrichment
  52. 2026-09-10 10:37 UTCEG score recompute
  53. 2026-09-10 10:37 UTCGHSA enrichment
  54. 2026-09-10 06:45 UTCGHSA enrichment
  55. 2026-09-10 02:54 UTCGHSA enrichment
  56. 2026-09-09 23:02 UTCGHSA enrichment
  57. 2026-09-09 19:11 UTCGHSA enrichment
  58. 2026-09-09 19:08 UTCCISA KEV update
  59. 2026-09-09 15:20 UTCGHSA enrichment
  60. 2026-09-09 11:29 UTCGHSA enrichment
  61. 2026-09-09 07:37 UTCGHSA enrichment
  62. 2026-09-09 03:46 UTCGHSA enrichment
  63. 2026-09-08 23:55 UTCGHSA enrichment
  64. 2026-09-08 20:04 UTCGHSA enrichment
  65. 2026-09-08 18:54 UTCCISA KEV update
  66. 2026-09-08 16:12 UTCGHSA enrichment
  67. 2026-09-08 12:19 UTCGHSA enrichment
  68. 2026-09-08 08:28 UTCGHSA enrichment
  69. 2026-09-08 04:37 UTCGHSA enrichment
  70. 2026-09-08 00:46 UTCGHSA enrichment
  71. 2026-09-07 20:54 UTCGHSA enrichment
  72. 2026-09-07 17:03 UTCEG score recompute
  73. 2026-09-07 17:03 UTCGHSA enrichment
  74. 2026-09-07 15:57 UTCEPSS rescore
  75. 2026-09-07 13:12 UTCGHSA enrichment

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Metasploit module) (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCSquirre17/CVE-2019-17621
    First seen Jul 20, 2022

    CVE-2019-17621 DLink_RCE

    Open source ↗
  • Metasploitexploit/linux/upnp/dlink_dir859_subscribe_exec✓ verified
    First seen Dec 24, 2019

    D-Link DIR-859 Unauthenticated Remote Command Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2019-17621?
CVE-2019-17621 is a critical vulnerability published on December 30, 2019. 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.
When was CVE-2019-17621 disclosed?
CVE-2019-17621 was first published in the National Vulnerability Database on December 30, 2019, with the most recent update on November 7, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-17621 actively exploited?
Yes. CISA added CVE-2019-17621 to the Known Exploited Vulnerabilities catalog on June 29, 2023, affecting D-Link DIR-859 Router. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2019-17621?
CVE-2019-17621 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2019-17621?
CVE-2019-17621 affects D-Link DIR-859 Router. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2019-17621?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-17621, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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