{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-76861 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-76861 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-76861 is a high-severity memory corruption vulnerability in Netcore NR255-V, published on 15 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-76861 and fix it if it is affected.\n\nWhat it is: CVE-2026-76861 is a high-severity memory corruption vulnerability in Netcore NR255-V, published on 15 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-76861 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-2026-76861/ (Markdown: https://insights.sbomify.com/CVE-2026-76861/index.md)","id":"CVE-2026-76861","markdown":"https://insights.sbomify.com/CVE-2026-76861/index.md","name":"CVE-2026-76861","record":{"aliases":["GHSA-hj8p-w4gv-7pjf"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Netcore router","requires_auth":"low_privilege","summary":"An attacker can execute arbitrary code on Netcore NR255-V routers by exploiting a stack-based buffer overflow in a CGI endpoint.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-121","name":"Stack-based Buffer Overflow"}],"description":"Netcore NR255-V version 1.5.130703 contains a stack-based buffer overflow in ntools_tcpdump_start_set.cgi caused by an unsized sprintf call when processing form values. An attacker can submit crafted input to this cgi endpoint to overflow the stack buffer and potentially execute arbitrary code.","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 Stack-Based Buffer Overflow in ntools_tcpdump_start_set.cgi","id":"CVE-2026-76861","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Netcore NR255-V 1.5.130703 OS Command Argument Injection in Nettools tcpdump Launch Paths","id":"CVE-2026-76862"},"packages":[],"prev":{"headline":"Netcore NR255-V 1.5.130703 Stack-Based Buffer Overflow in wake_up_set.cgi via MAC and ID Tokenization","id":"CVE-2026-76860"},"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":"An attacker can execute arbitrary code on Netcore NR255-V routers by exploiting a stack-based buffer overflow in a CGI endpoint.","url":"https://insights.sbomify.com/CVE-2026-76861/"}