CVE-2019-17621 (GCVE-0-2019-17621)
Vulnerability from cvelistv5 – Published: 2019-12-30 16:09 – Updated: 2025-10-21 23:35Summary
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.
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-04 20:33 UTC
CWE
- n/a
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://www.ftc.gov/system/files/documents/cases/… | x_refsource_MISC |
| https://www.dlink.com/en/security-bulletin | x_refsource_MISC |
| https://supportannouncement.us.dlink.com/announce… | x_refsource_CONFIRM |
| https://supportannouncement.us.dlink.com/announce… | x_refsource_CONFIRM |
| https://medium.com/%40s1kr10s/d-link-dir-859-rce-… | x_refsource_MISC |
| https://medium.com/%40s1kr10s/d-link-dir-859-rce-… | x_refsource_MISC |
| http://packetstormsecurity.com/files/156054/D-Lin… | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: f39c8540-8e1f-41bc-9512-fb39f5121e2b
Exploited: Yes
Timestamps
First Seen: 2023-06-29
Asserted: 2023-06-29
Scope
Notes: KEV entry: D-Link DIR-859 Router Command Execution Vulnerability | Affected: D-Link / DIR-859 Router | Description: D-Link DIR-859 router contains a command execution vulnerability in the UPnP endpoint URL, /gena.cgi. Exploitation 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. | Required action: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable. | Due date: 2023-07-20 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10147; https://nvd.nist.gov/vuln/detail/CVE-2019-17621
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-78 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | DIR-859 Router |
| Due Date | 2023-07-20 |
| Date Added | 2023-06-29 |
| Vendorproject | D-Link |
| Vulnerabilityname | D-Link DIR-859 Router Command Execution Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:26 UTC
| Updated: 2026-02-06 07:17 UTC
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 7d77a9a8-f410-49df-a19f-d1b209b5e6f8
Exploited: Yes
Characteristics
Severity:
98.0
Timestamps
First Seen: 2024-09-08
Asserted: 2024-09-08
Last Seen: 2024-09-08
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: D-Link / D-Link DIR-859 | Class: router | Severity: Critical (CVSS 9.8) | IoT: yes | In CISA KEV: no | Honeypot connections on 2023-05-19: 2
Evidence
Type: Honeypot
Signal: In The Wild Attempts
Confidence: 70%
Source: shadowserver
Details
| 1D | 1 |
|---|---|
| Iot | yes |
| Feed | Shadowserver Foundation honeypot/exploited-vulnerabilities |
| Type | http-scan |
| Class | router |
| 7D Avg | 0 |
| Vendor | D-Link |
| 30D Avg | 0 |
| 90D Avg | 0 |
| Product | D-Link DIR-859 |
| Cisa Kev | no |
| Connections | 2 |
| Observation Date | 2023-05-19 |
| Vulnerability Class | CVSS |
| Vulnerability Score | 9.8 |
| Vulnerability Severity | Critical |
References
Created: 2026-06-30 10:01 UTC
| Updated: 2026-06-30 15:21 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 374cb63e-1094-4f75-9d85-0e72e718d0ab
Exploited: Yes
Timestamps
First Seen: 2023-06-29
Asserted: 2023-06-29
Scope
Notes: KEVIntel entry: 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... | Affected: D-Link / DIR-859 Wi-Fi router | CVSS: 9.8 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | 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... |
| Vendor | D-Link |
| Product | DIR-859 Wi-Fi router |
| Added Date | 2023-06-29T00:00:00.000Z |
| Cvss Score | 9.8 |
| Epss Score | None |
| Cvss Severity | CRITICAL |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 14:05 UTC
| Updated: 2026-07-10 06:14 UTC
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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