{"answers":{"affected":"It affects 21 products.","exploited":"There is no known exploitation of CVE-2021-3453 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-3453 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-3453 is a medium-severity vulnerability in Lenovo BIOS, published on 16 Jul 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-2021-3453 and fix it if it is affected.\n\nWhat it is: CVE-2021-3453 is a medium-severity vulnerability in Lenovo BIOS, published on 16 Jul 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-2021-3453 in the wild and no public exploit code.\n\nAffected product: Lenovo BIOS. 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-2021-3453/ (Markdown: https://insights.sbomify.com/CVE-2021-3453/index.md)","id":"CVE-2021-3453","markdown":"https://insights.sbomify.com/CVE-2021-3453/index.md","name":"CVE-2021-3453","record":{"aliases":["GHSA-rm7h-f39f-xc8f"],"analysis":{"component_type":"hardware_firmware","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Lenovo BIOS","requires_auth":"none","summary":"Attackers with physical access can bypass Intel Boot Guard to write to SPI flash, enabling persistent code execution on Lenovo systems.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"lenovo","cpe":[{"product":"730s-13iml_firmware","vendor":"lenovo"},{"product":"ideacentre_aio_5-24imb05_firmware","vendor":"lenovo"},{"product":"ideacentre_aio_5-74imb05_firmware","vendor":"lenovo"},{"product":"ideapad_1-11igl05_firmware","vendor":"lenovo"},{"product":"ideapad_1-14igl05_firmware","vendor":"lenovo"},{"product":"ideapad_s940-14iil_firmware","vendor":"lenovo"},{"product":"ideapad_s940-14iwl_firmware","vendor":"lenovo"},{"product":"ideapad_slim_1-11ast-05_firmware","vendor":"lenovo"},{"product":"ideapad_slim_1-14ast-05_firmware","vendor":"lenovo"},{"product":"thinkpad_helix_firmware","vendor":"lenovo"},{"product":"thinkpad_t550_firmware","vendor":"lenovo"},{"product":"thinkpad_w550s_firmware","vendor":"lenovo"},{"product":"thinkpad_x1_carbon_3rd_gen_firmware","vendor":"lenovo"},{"product":"thinkpad_x250_firmware","vendor":"lenovo"},{"product":"thinkpad_yoga_15_firmware","vendor":"lenovo"},{"product":"v130-15igm_firmware","vendor":"lenovo"},{"product":"v330-15ikb_firmware","vendor":"lenovo"},{"product":"v330-15isk_firmware","vendor":"lenovo"},{"product":"yoga_s730-13iml_firmware","vendor":"lenovo"},{"product":"yoga_s940-14iil_firmware","vendor":"lenovo"},{"product":"yoga_s940-14iwl_firmware","vendor":"lenovo"}],"cvss":{"score":6.8,"severity":"medium","source":"cna","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-693","name":"Protection Mechanism Failure"}],"description":"Some Lenovo Notebook, ThinkPad, and Lenovo Desktop systems have BIOS modules unprotected by Intel Boot Guard that could allow an attacker with physical access the ability to write to the SPI flash storage.","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 BIOS","id":"CVE-2021-3453","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Truncated L2CAP K-frame causes assertion failure","id":"CVE-2021-3454"},"packages":[],"prev":{"headline":"Code injection in ThinkPad BIOS","id":"CVE-2021-3452"},"products":["BIOS"],"published":"2021-07-16","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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-12-16","vendors":["Lenovo"]},"summary":"Attackers with physical access can bypass Intel Boot Guard to write to SPI flash, enabling persistent code execution on Lenovo systems.","url":"https://insights.sbomify.com/CVE-2021-3453/"}