{"answers":{"affected":"It affects 37 products.","exploited":"There is no known exploitation of CVE-2021-35029 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-35029 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-35029 is a critical authentication bypass vulnerability in Zyxel ATP series Firmware, published on 2 Jul 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-2021-35029 and fix it if it is affected.\n\nWhat it is: CVE-2021-35029 is a critical authentication bypass vulnerability in Zyxel ATP series Firmware, published on 2 Jul 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-2021-35029 in the wild and no public exploit code.\n\nAffected product: Zyxel ATP series Firmware. 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-2021-35029/ (Markdown: https://insights.sbomify.com/CVE-2021-35029/index.md)","id":"CVE-2021-35029","markdown":"https://insights.sbomify.com/CVE-2021-35029/index.md","name":"CVE-2021-35029","record":{"aliases":["GHSA-2h44-x2fr-537p"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Zyxel firewall firmware","requires_auth":"none","summary":"Remote attackers can bypass authentication in Zyxel USG/Zywall and related series firmware to execute arbitrary commands on the device.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Zyxel","cpe":[{"product":"usg1000_firmware","vendor":"zyxel"},{"product":"usg100_firmware","vendor":"zyxel"},{"product":"usg1100_firmware","vendor":"zyxel"},{"product":"usg110_firmware","vendor":"zyxel"},{"product":"usg1900_firmware","vendor":"zyxel"},{"product":"usg20-vpn_firmware","vendor":"zyxel"},{"product":"usg2000_firmware","vendor":"zyxel"},{"product":"usg200_firmware","vendor":"zyxel"},{"product":"usg20_firmware","vendor":"zyxel"},{"product":"usg20w-vpn_firmware","vendor":"zyxel"},{"product":"usg20w_firmware","vendor":"zyxel"},{"product":"usg210_firmware","vendor":"zyxel"},{"product":"usg2200-vpn_firmware","vendor":"zyxel"},{"product":"usg300_firmware","vendor":"zyxel"},{"product":"usg310_firmware","vendor":"zyxel"},{"product":"usg40_firmware","vendor":"zyxel"},{"product":"usg40w_firmware","vendor":"zyxel"},{"product":"usg50_firmware","vendor":"zyxel"},{"product":"usg60_firmware","vendor":"zyxel"},{"product":"usg60w_firmware","vendor":"zyxel"},{"product":"usg_flex_100_firmware","vendor":"zyxel"},{"product":"usg_flex_100w_firmware","vendor":"zyxel"},{"product":"usg_flex_200_firmware","vendor":"zyxel"},{"product":"usg_flex_500_firmware","vendor":"zyxel"},{"product":"usg_flex_700_firmware","vendor":"zyxel"},{"product":"zywall_1100_firmware","vendor":"zyxel"},{"product":"zywall_110_firmware","vendor":"zyxel"},{"product":"zywall_310_firmware","vendor":"zyxel"},{"product":"zywall_atp100_firmware","vendor":"zyxel"},{"product":"zywall_atp100w_firmware","vendor":"zyxel"},{"product":"zywall_atp200_firmware","vendor":"zyxel"},{"product":"zywall_atp500_firmware","vendor":"zyxel"},{"product":"zywall_atp700_firmware","vendor":"zyxel"},{"product":"zywall_atp800_firmware","vendor":"zyxel"},{"product":"zywall_vpn100_firmware","vendor":"zyxel"},{"product":"zywall_vpn300_firmware","vendor":"zyxel"},{"product":"zywall_vpn50_firmware","vendor":"zyxel"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","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-287","name":"Improper Authentication"}],"description":"An authentication bypasss vulnerability in the web-based management interface of Zyxel USG/Zywall series firmware versions 4.35 through 4.64 and USG Flex, ATP, and VPN series firmware versions 4.35 through 5.01, which could allow a remote attacker to execute arbitrary commands on an affected device.","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":"Auth bypass in ATP series Firmware","id":"CVE-2021-35029","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Cross-site scripting in GS1900-8 Firmware","id":"CVE-2021-35030"},"packages":[],"prev":{"headline":"Command injection in ZyWALL VPN2S Firmware","id":"CVE-2021-35028"},"products":["ATP series Firmware","USG FLEX series Firmware","USG/Zywall series Firmware","VPN series Firmware"],"published":"2021-07-02","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":"2024-08-04","vendors":["Zyxel"]},"summary":"Remote attackers can bypass authentication in Zyxel USG/Zywall and related series firmware to execute arbitrary commands on the device.","url":"https://insights.sbomify.com/CVE-2021-35029/"}