{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-76870 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-76870 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-76870 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-2026-76870 and fix it if it is affected.\n\nWhat it is: CVE-2026-76870 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-2026-76870 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-2026-76870/ (Markdown: https://insights.sbomify.com/CVE-2026-76870/index.md)","id":"CVE-2026-76870","markdown":"https://insights.sbomify.com/CVE-2026-76870/index.md","name":"CVE-2026-76870","record":{"aliases":["GHSA-6pww-6jhw-38g6"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["denial_of_service","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Netcore router","requires_auth":"low_privilege","summary":"Attackers can trigger out-of-bounds reads by uploading truncated firmware images, potentially causing denial of service or information disclosure.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"Netcore NR255-V version 1.5.130703 contains an out-of-bounds read vulnerability in the mtd_write pre-flash validation routine triggered by short firmware uploads. Attackers can upload a truncated firmware image via put_file_cgi.c to trigger out-of-bounds reads across main.c, check_image_uuid.c, and oemMD5Update.c.","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 Out-of-Bounds Read in mtd_write Firmware Upload Validation","id":"CVE-2026-76870","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 Sensitive Information Disclosure via VPN Read Handlers","id":"CVE-2026-76871"},"packages":[],"prev":{"headline":"Netcore NR255-V 1.5.130703 Stack-Based Buffer Overflow in reboot_timer_set.cgi","id":"CVE-2026-76869"},"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":"partial"},"state":"PUBLISHED","updated":"2026-09-16","vendors":["Netcore"]},"summary":"Attackers can trigger out-of-bounds reads by uploading truncated firmware images, potentially causing denial of service or information disclosure.","url":"https://insights.sbomify.com/CVE-2026-76870/"}