{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-20711 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-20711 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-20711 is a critical command injection vulnerability in NEC Corporation Aterm WG2600HS, published on 26 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-20711 and fix it if it is affected.\n\nWhat it is: CVE-2021-20711 is a critical command injection vulnerability in NEC Corporation Aterm WG2600HS, published on 26 Apr 2021. 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-2021-20711 in the wild and no public exploit code.\n\nAffected product: NEC Corporation Aterm WG2600HS. 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-2021-20711/ (Markdown: https://insights.sbomify.com/CVE-2021-20711/index.md)","id":"CVE-2021-20711","markdown":"https://insights.sbomify.com/CVE-2021-20711/index.md","name":"CVE-2021-20711","record":{"aliases":["GHSA-p4fr-76vx-7r7v"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"NEC Aterm router","requires_auth":"none","summary":"Attackers can execute arbitrary OS commands on NEC Aterm WG2600HS routers, potentially compromising the device.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jpcert","cpe":[{"product":"aterm_wg2600hs_firmware","vendor":"nec"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command"}],"description":"Aterm WG2600HS firmware Ver1.5.1 and earlier allows an attacker to execute arbitrary OS commands via unspecified vectors.","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":"Command injection in Aterm WG2600HS","id":"CVE-2021-20711","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"command_injection","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Auth bypass in NEC Aterm devices","id":"CVE-2021-20712"},"packages":[],"prev":{"headline":"Cross-site scripting in Aterm WG2600HS","id":"CVE-2021-20710"},"products":["Aterm WG2600HS"],"published":"2021-04-26","related":[{"cvss_score":8,"headline":"Command injection in Aterm WG2600HS","id":"CVE-2020-5534","kev_date_added":null,"published":"2020-02-21"},{"cvss_score":6.1,"headline":"Cross-site scripting in Aterm WG2600HS","id":"CVE-2020-5533","kev_date_added":null,"published":"2020-02-21"},{"cvss_score":5.3,"headline":"Auth bypass in NEC Aterm devices","id":"CVE-2021-20712","kev_date_added":null,"published":"2021-04-26"}],"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":["NEC Corporation"]},"summary":"Attackers can execute arbitrary OS commands on NEC Aterm WG2600HS routers, potentially compromising the device.","url":"https://insights.sbomify.com/CVE-2021-20711/"}