{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-3297 exists.","fix":"No fix has been published for CVE-2021-3297 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-3297 is a high-severity authentication bypass vulnerability in n/a, published on 26 Jan 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-2021-3297 and fix it if it is affected.\n\nWhat it is: CVE-2021-3297 is a high-severity authentication bypass vulnerability in n/a, published on 26 Jan 2021. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-3297 exists.\n\nAffected product: n/a. 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-2021-3297/ (Markdown: https://insights.sbomify.com/CVE-2021-3297/index.md)","id":"CVE-2021-3297","markdown":"https://insights.sbomify.com/CVE-2021-3297/index.md","name":"CVE-2021-3297","record":{"aliases":["GHSA-vqr2-c24p-rh7p"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["privilege_escalation","account_takeover"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Zyxel wireless router","requires_auth":"low_privilege","summary":"Attackers can gain administrator access on Zyxel NBG2105 routers by setting a specific login cookie value.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"nbg2105_firmware","vendor":"zyxel"}],"cvss":{"score":7.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"On Zyxel NBG2105 V1.00(AAGU.2)C0 devices, setting the login cookie to 1 provides administrator access.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":1,"refs":[{"date":null,"kind":"nuclei","ref":"http/cves/2021/CVE-2021-3297.yaml","stars":null,"title":"Zyxel NBG2105 V1.00(AAGU.2)C0 - Authentication Bypass"}],"tier":"weaponised"},"has_fix":null,"headline":"Auth bypass in n/a","id":"CVE-2021-3297","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2021"},"n_packages":0,"n_references":4,"next":{"headline":"Cross-site scripting in n/a","id":"CVE-2021-3298"},"packages":[],"prev":{"headline":"Cross-site scripting in n/a","id":"CVE-2021-3294"},"products":["n/a"],"published":"2021-01-26","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)"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2025-11-25","vendors":["n/a"]},"summary":"Attackers can gain administrator access on Zyxel NBG2105 routers by setting a specific login cookie value.","url":"https://insights.sbomify.com/CVE-2021-3297/"}