{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-28136 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-28136 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-28136 is a medium-severity memory corruption vulnerability in n/a, published on 7 Sep 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-2021-28136 and fix it if it is affected.\n\nWhat it is: CVE-2021-28136 is a medium-severity memory corruption vulnerability in n/a, published on 7 Sep 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-2021-28136 in the wild and no public exploit code.\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-2021-28136/ (Markdown: https://insights.sbomify.com/CVE-2021-28136/index.md)","id":"CVE-2021-28136","markdown":"https://insights.sbomify.com/CVE-2021-28136/index.md","name":"CVE-2021-28136","record":{"aliases":["GHSA-w488-94f6-hhmr"],"analysis":{"component_type":"iot_embedded","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"ESP32 Bluetooth stack","requires_auth":"none","summary":"Attackers in radio range can crash ESP32 devices by replaying LMP packets during Bluetooth pairing due to improper handling in the ESP-IDF Bluetooth Classic implementation.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"esp-idf","vendor":"espressif"}],"cvss":{"score":6.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"The Bluetooth Classic implementation in Espressif ESP-IDF 4.4 and earlier does not properly handle the reception of multiple LMP IO Capability Request packets during the pairing process, allowing attackers in radio range to trigger memory corruption (and consequently a crash) in ESP32 via a replayed (duplicated) LMP packet.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Memory corruption in n/a","id":"CVE-2021-28136","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":4,"next":{"headline":"Memory corruption in n/a","id":"CVE-2021-28139"},"packages":[],"prev":{"headline":"Denial of service in n/a","id":"CVE-2021-28135"},"products":["n/a"],"published":"2021-09-07","related":[{"cvss_score":9.3,"headline":"ESF-IDF: Out-of-Bounds Write in ESP-TEE Secure Service Wrappers","id":"CVE-2026-45328","kev_date_added":null,"published":"2026-06-10"},{"cvss_score":8.8,"headline":"Auth bypass in n/a","id":"CVE-2024-53406","kev_date_added":null,"published":"2025-03-13"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2021-28139","kev_date_added":null,"published":"2021-09-07"},{"cvss_score":8.1,"headline":"Information disclosure in n/a","id":"CVE-2024-33453","kev_date_added":null,"published":"2024-10-17"},{"cvss_score":8.1,"headline":"Weak cryptography in n/a","id":"CVE-2019-12587","kev_date_added":null,"published":"2019-09-04"},{"cvss_score":7.5,"headline":"ESF-IDF: Remote Null Pointer Dereference in WebSocket Server","id":"CVE-2026-45541","kev_date_added":null,"published":"2026-06-10"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2024-51428","kev_date_added":null,"published":"2024-11-07"}],"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 in radio range can crash ESP32 devices by replaying LMP packets during Bluetooth pairing due to improper handling in the ESP-IDF Bluetooth Classic implementation.","url":"https://insights.sbomify.com/CVE-2021-28136/"}