CVE-2026-76866 (GCVE-0-2026-76866)
Vulnerability from cvelistv5 – Published: 2026-09-15 21:57 – Updated: 2026-09-15 21:57
VLAI
EPSS
VEX
Title
Netcore NR255-V 1.5.130703 OS Command Argument Injection via Unquoted DDNS Parameters
Summary
Netcore NR255-V firmware version 1.5.130703 builds root-run command lines from unquoted user-supplied DDNS input in DDNSset_cgi.c and related ddns_Proc.c components, enabling os command argument injection. Attackers can exploit the unsanitized parameters to inject additional command arguments executed with root privileges.
Severity
CWE
- CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/draw-ctf/netcore-router-public… | third-party-advisory |
| https://www.vulncheck.com/advisories/netcore-nr25… | third-party-advisory |
Impacted products
Date Public
2026-09-04 00:00
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"lang": "en",
"type": "finder",
"value": "Jiang Yuxuan"
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{
"lang": "en",
"type": "finder",
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"descriptions": [
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"description": "Improper Neutralization of Argument Delimiters in a Command (\u0027Argument Injection\u0027)",
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}
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"providerMetadata": {
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"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"references": [
{
"name": "Netcore router public references: DDNS Management Builds Root-run Command Lines from Unquoted User Input",
"tags": [
"third-party-advisory"
],
"url": "https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-ddns-argv-injection.md"
},
{
"name": "VulnCheck Advisory: Netcore NR255-V 1.5.130703 OS Command Argument Injection via Unquoted DDNS Parameters",
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"url": "https://www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-os-command-argument-injection-via-unquoted-ddns-parameters"
}
],
"title": "Netcore NR255-V 1.5.130703 OS Command Argument Injection via Unquoted DDNS Parameters",
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"datePublished": "2026-09-15T21:57:58.285Z",
"dateReserved": "2026-08-19T21:47:08.936Z",
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}
}
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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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