{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-26621 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-26621 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-26621 is a high-severity memory corruption vulnerability in NetU Corp. MEX01, published on 25 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-26621 and fix it if it is affected.\n\nWhat it is: CVE-2021-26621 is a high-severity memory corruption vulnerability in NetU Corp. MEX01, published on 25 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-26621 in the wild and no public exploit code.\n\nAffected product: NetU Corp. MEX01. 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-2021-26621/ (Markdown: https://insights.sbomify.com/CVE-2021-26621/index.md)","id":"CVE-2021-26621","markdown":"https://insights.sbomify.com/CVE-2021-26621/index.md","name":"CVE-2021-26621","record":{"aliases":["GHSA-8gwh-x546-9265"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Netis MEX01 router","requires_auth":"none","summary":"Remote attackers can execute arbitrary code on Netis MEX01 devices via a buffer overflow in the strcpy function.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"krcert","cpe":[{"product":"mex01_firmware","vendor":"netu"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-120","name":"Buffer Copy without Checking Size of Input"}],"description":"An Buffer Overflow vulnerability leading to remote code execution was discovered in MEX01. Remote attackers can use this vulnerability by using the property that the target program copies parameter values to memory through the strcpy() function.","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":"Netis Korea MEX01 Buffer overflow vulnerability","id":"CVE-2021-26621","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Genian NAC remote code execution vulnerability","id":"CVE-2021-26622"},"packages":[],"prev":{"headline":"IPTIME NAS2dual improper authentication vulnerability","id":"CVE-2021-26620"},"products":["MEX01"],"published":"2022-03-25","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["NetU Corp."]},"summary":"Remote attackers can execute arbitrary code on Netis MEX01 devices via a buffer overflow in the strcpy function.","url":"https://insights.sbomify.com/CVE-2021-26621/"}