{"answers":{"affected":"It affects 35 products.","exploited":"There is no known exploitation of CVE-2021-20716 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-20716 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-20716 is a critical vulnerability in Buffalo network devices, published on 28 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-2021-20716 and fix it if it is affected.\n\nWhat it is: CVE-2021-20716 is a critical vulnerability in Buffalo network devices, published on 28 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-2021-20716 in the wild and no public exploit code.\n\nAffected product: Buffalo network devices. 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-2021-20716/ (Markdown: https://insights.sbomify.com/CVE-2021-20716/index.md)","id":"CVE-2021-20716","markdown":"https://insights.sbomify.com/CVE-2021-20716/index.md","name":"CVE-2021-20716","record":{"aliases":["GHSA-76mj-jfgj-cfq9"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["code_execution","privilege_escalation","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Buffalo network devices","requires_auth":"none","summary":"Remote attackers can exploit hidden debug functionality in Buffalo network devices to execute arbitrary code, modify configurations, or cause denial of service.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jpcert","cpe":[{"product":"bhr-4rv_firmware","vendor":"buffalo"},{"product":"fs-g54_firmware","vendor":"buffalo"},{"product":"wbr-b11_firmware","vendor":"buffalo"},{"product":"wbr-g54_firmware","vendor":"buffalo"},{"product":"wbr-g54l_firmware","vendor":"buffalo"},{"product":"wbr2-b11_firmware","vendor":"buffalo"},{"product":"wbr2-g54-kd_firmware","vendor":"buffalo"},{"product":"wbr2-g54_firmware","vendor":"buffalo"},{"product":"whr-g54-nf_firmware","vendor":"buffalo"},{"product":"whr-g54_firmware","vendor":"buffalo"},{"product":"whr2-a54g54_firmware","vendor":"buffalo"},{"product":"whr2-g54_firmware","vendor":"buffalo"},{"product":"whr2-g54v_firmware","vendor":"buffalo"},{"product":"whr3-ag54_firmware","vendor":"buffalo"},{"product":"wla-b11_firmware","vendor":"buffalo"},{"product":"wla-g54_firmware","vendor":"buffalo"},{"product":"wla-g54c_firmware","vendor":"buffalo"},{"product":"wla2-g54_firmware","vendor":"buffalo"},{"product":"wla2-g54c_firmware","vendor":"buffalo"},{"product":"wlah-a54g54_firmware","vendor":"buffalo"},{"product":"wlah-am54g54_firmware","vendor":"buffalo"},{"product":"wlah-g54_firmware","vendor":"buffalo"},{"product":"wli-t1-b11_firmware","vendor":"buffalo"},{"product":"wli-tx1-g54_firmware","vendor":"buffalo"},{"product":"wli2-tx1-ag54_firmware","vendor":"buffalo"},{"product":"wli2-tx1-amg54_firmware","vendor":"buffalo"},{"product":"wli2-tx1-g54_firmware","vendor":"buffalo"},{"product":"wli3-tx1-amg54_firmware","vendor":"buffalo"},{"product":"wli3-tx1-g54_firmware","vendor":"buffalo"},{"product":"wvr-g54-nf_firmware","vendor":"buffalo"},{"product":"wzr-g108_firmware","vendor":"buffalo"},{"product":"wzr-g54_firmware","vendor":"buffalo"},{"product":"wzr-hp-g54_firmware","vendor":"buffalo"},{"product":"wzr-rs-g54_firmware","vendor":"buffalo"},{"product":"wzr-rs-g54hp_firmware","vendor":"buffalo"}],"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":[],"description":"Hidden functionality in multiple Buffalo network devices (BHR-4RV firmware Ver.2.55 and prior, FS-G54 firmware Ver.2.04 and prior, WBR2-B11 firmware Ver.2.32 and prior, WBR2-G54 firmware Ver.2.32 and prior, WBR2-G54-KD firmware Ver.2.32 and prior, WBR-B11 firmware Ver.2.23 and prior, WBR-G54 firmware Ver.2.23 and prior, WBR-G54L firmware Ver.2.20 and prior, WHR2-A54G54 firmware Ver.2.25 and prior, WHR2-G54 firmware Ver.2.23 and prior, WHR2-G54V firmware Ver.2.55 and prior, WHR3-AG54 firmware Ver.2.23 and prior, WHR-G54 firmware Ver.2.16 and prior, WHR-G54-NF firmware Ver.2.10 and prior, WLA2-G54 firmware Ver.2.24 and prior, WLA2-G54C firmware Ver.2.24 and prior, WLA-B11 firmware Ver.2.20 and prior, WLA-G54 firmware Ver.2.20 and prior, WLA-G54C firmware Ver.2.20 and prior, WLAH-A54G54 firmware Ver.2.54 and prior, WLAH-AM54G54 firmware Ver.2.54 and prior, WLAH-G54 firmware Ver.2.54 and prior, WLI2-TX1-AG54 firmware Ver.2.53 and prior, WLI2-TX1-AMG54 firmware Ver.2.53 and prior, WLI2-TX1-G54 firmware Ver.2.20 and prior, WLI3-TX1-AMG54 firmware Ver.2.53 and prior, WLI3-TX1-G54 firmware Ver.2.53 and prior, WLI-T1-B11 firmware Ver.2.20 and prior, WLI-TX1-G54 firmware Ver.2.20 and prior, WVR-G54-NF firmware Ver.2.02 and prior, WZR-G108 firmware Ver.2.41 and prior, WZR-G54 firmware Ver.2.41 and prior, WZR-HP-G54 firmware Ver.2.41 and prior, WZR-RS-G54 firmware Ver.2.55 and prior, and WZR-RS-G54HP firmware Ver.2.55 and prior) allows a remote attacker to enable the debug option and to execute arbitrary code or OS commands, change the configuration, and cause a denial of service (DoS) condition.","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":"Security feature bypass in Buffalo network devices","id":"CVE-2021-20716","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"EC-CUBE Cross-site scripting vulnerability","id":"CVE-2021-20717"},"packages":[],"prev":{"headline":"Open redirect in Hot Pepper Gourmet App","id":"CVE-2021-20715"},"products":["Buffalo network devices"],"published":"2021-04-28","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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["BUFFALO INC."]},"summary":"Remote attackers can exploit hidden debug functionality in Buffalo network devices to execute arbitrary code, modify configurations, or cause denial of service.","url":"https://insights.sbomify.com/CVE-2021-20716/"}