{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-76866 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-76866 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-76866 is a high-severity command injection vulnerability in Netcore NR255-V, published on 15 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-76866 and fix it if it is affected.\n\nWhat it is: CVE-2026-76866 is a high-severity command injection vulnerability in Netcore NR255-V, published on 15 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-76866 in the wild and no public exploit code.\n\nAffected product: Netcore NR255-V. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-76866/ (Markdown: https://insights.sbomify.com/CVE-2026-76866/index.md)","id":"CVE-2026-76866","markdown":"https://insights.sbomify.com/CVE-2026-76866/index.md","name":"CVE-2026-76866","record":{"aliases":["GHSA-48c9-xhf8-82q7"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Netcore router firmware","requires_auth":"high_privilege","summary":"Attackers can inject command arguments via DDNS parameters to execute arbitrary code with root privileges on Netcore NR255-V routers.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-88","name":"Improper Neutralization of Argument Delimiters in a Command"}],"description":"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Netcore NR255-V 1.5.130703 OS Command Argument Injection via Unquoted DDNS Parameters","id":"CVE-2026-76866","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"command_injection","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Netcore NR255-V 1.5.130703 Stored Cross-Site Scripting in Route/NAT Configuration CGI Handlers","id":"CVE-2026-76867"},"packages":[],"prev":{"headline":"Netcore NR255-V 1.5.130703 NULL Pointer Dereference via Unchecked atoi() in QoS Setter Handlers","id":"CVE-2026-76865"},"products":["NR255-V"],"published":"2026-09-15","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-21","vendors":["Netcore"]},"summary":"Attackers can inject command arguments via DDNS parameters to execute arbitrary code with root privileges on Netcore NR255-V routers.","url":"https://insights.sbomify.com/CVE-2026-76866/"}