{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-35027 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-35027 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-35027 is a high-severity path traversal vulnerability in Zyxel ZyWALL VPN2S Firmware, published on 29 Sep 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-2021-35027 and fix it if it is affected.\n\nWhat it is: CVE-2021-35027 is a high-severity path traversal vulnerability in Zyxel ZyWALL VPN2S Firmware, published on 29 Sep 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-2021-35027 in the wild and no public exploit code.\n\nAffected product: Zyxel ZyWALL VPN2S 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-2021-35027/ (Markdown: https://insights.sbomify.com/CVE-2021-35027/index.md)","id":"CVE-2021-35027","markdown":"https://insights.sbomify.com/CVE-2021-35027/index.md","name":"CVE-2021-35027","record":{"aliases":["GHSA-gf8r-6336-2wmx"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Zyxel VPN2S firmware","requires_auth":"none","summary":"A remote attacker can exploit a directory traversal flaw in the Zyxel VPN2S web server to access sensitive information.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Zyxel","cpe":[{"product":"zywall_vpn2s_firmware","vendor":"zyxel"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"},{"id":"CWE-27","name":"Path Traversal: 'dir/../../filename'"}],"description":"A directory traversal vulnerability in the web server of the Zyxel VPN2S firmware version 1.12 could allow a remote attacker to gain access to sensitive information.","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":"Path traversal in ZyWALL VPN2S Firmware","id":"CVE-2021-35027","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Command injection in ZyWALL VPN2S Firmware","id":"CVE-2021-35028"},"packages":[],"prev":{"headline":"Information disclosure in TeamViewer","id":"CVE-2021-35005"},"products":["ZyWALL VPN2S Firmware"],"published":"2021-09-29","related":[{"cvss_score":7.3,"headline":"Command injection in ZyWALL VPN2S Firmware","id":"CVE-2021-35028","kev_date_added":null,"published":"2021-09-29"}],"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":"A remote attacker can exploit a directory traversal flaw in the Zyxel VPN2S web server to access sensitive information.","url":"https://insights.sbomify.com/CVE-2021-35027/"}