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
9.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 90%CVSS: 9.8Exploit: NoneExposed: 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
99.8%
KEV
⚠ Exploited

Published

December 30, 2019

Last Modified

November 7, 2025

Advisory Details (4)

Auto-updated Jun 1, 2026
No patch confirmed yet.
generic

Packet Storm

http://packetstormsecurity.com/files/156054/D-Link-DIR-859-Unauthenticated-Remote-Command-Execution.html
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 48× in last 7d / 206× 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 387 total refreshes for this CVE.

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

Explore the affected products and dependency analysis for CVE-2019-17621

Explore →

Is Your Infrastructure Affected by CVE-2019-17621?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs