{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-20153 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-20153 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-20153 is a medium-severity path traversal vulnerability in Trendnet AC2600 TEW-827DRU, published on 30 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-20153 and fix it if it is affected.\n\nWhat it is: CVE-2021-20153 is a medium-severity path traversal vulnerability in Trendnet AC2600 TEW-827DRU, published on 30 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-20153 in the wild and no public exploit code.\n\nAffected product: Trendnet AC2600 TEW-827DRU. 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-2021-20153/ (Markdown: https://insights.sbomify.com/CVE-2021-20153/index.md)","id":"CVE-2021-20153","markdown":"https://insights.sbomify.com/CVE-2021-20153/index.md","name":"CVE-2021-20153","record":{"aliases":["GHSA-xqh9-rp73-qqh5"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Trendnet wireless router","requires_auth":"none","summary":"Attackers can achieve remote code execution on Trendnet routers by exploiting a symlink vulnerability in the optional bittorrent feature via malicious USB drives.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"tenable","cpe":[{"product":"tew-827dru_firmware","vendor":"trendnet"}],"cvss":{"score":6.8,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-59","name":"Improper Link Resolution Before File Access"}],"description":"Trendnet AC2600 TEW-827DRU version 2.08B01 contains a symlink vulnerability in the bittorrent functionality. If enabled, the bittorrent functionality is vulnerable to a symlink attack that could lead to remote code execution on the device. If an end user inserts a flash drive with a malicious symlink on it that the bittorrent client can write downloads to, then a user is able to download arbitrary files to any desired location on the devices filesystem, which could lead to remote code execution. Example directories vulnerable to this include \"config\", \"downloads\", and \"torrents\", though it should be noted that \"downloads\" is the only vector that allows for arbitrary files to be downloaded to arbitrary locations.","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 Trendnet AC2600 TEW-827DRU","id":"CVE-2021-20153","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":"Information disclosure in Trendnet AC2600 TEW-827DRU","id":"CVE-2021-20154"},"packages":[],"prev":{"headline":"Missing authorization in Trendnet AC2600 TEW-827DRU","id":"CVE-2021-20152"},"products":["Trendnet AC2600 TEW-827DRU"],"published":"2021-12-30","related":[{"cvss_score":10,"headline":"Command injection in n/a","id":"CVE-2024-28354","kev_date_added":null,"published":"2024-03-15"},{"cvss_score":10,"headline":"Auth bypass in Trendnet AC2600 TEW-827DRU","id":"CVE-2021-20151","kev_date_added":null,"published":"2021-12-30"},{"cvss_score":9.8,"headline":"Missing authorization in Trendnet AC2600 TEW-827DRU","id":"CVE-2021-20149","kev_date_added":null,"published":"2021-12-30"},{"cvss_score":9.8,"headline":"Hardcoded credentials in Trendnet AC2600 TEW-827DRU","id":"CVE-2021-20155","kev_date_added":null,"published":"2021-12-30"},{"cvss_score":9.8,"headline":"Auth bypass in Trendnet AC2600 TEW-827DRU","id":"CVE-2021-20158","kev_date_added":null,"published":"2021-12-30"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2020-14080","kev_date_added":null,"published":"2020-06-15"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2019-13276","kev_date_added":null,"published":"2019-07-10"}],"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":["n/a"]},"summary":"Attackers can achieve remote code execution on Trendnet routers by exploiting a symlink vulnerability in the optional bittorrent feature via malicious USB drives.","url":"https://insights.sbomify.com/CVE-2021-20153/"}