{"answers":{"affected":"It affects 15 products.","exploited":"There is no known exploitation of CVE-2021-41838 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-41838 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-41838 is a high-severity code injection vulnerability in Insyde Insydeh2o, published on 3 Feb 2022. 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-2021-41838 and fix it if it is affected.\n\nWhat it is: CVE-2021-41838 is a high-severity code injection vulnerability in Insyde Insydeh2o, published on 3 Feb 2022. 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-2021-41838 in the wild and no public exploit code.\n\nAffected product: Insyde Insydeh2o. 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-2021-41838/ (Markdown: https://insights.sbomify.com/CVE-2021-41838/index.md)","id":"CVE-2021-41838","markdown":"https://insights.sbomify.com/CVE-2021-41838/index.md","name":"CVE-2021-41838","record":{"aliases":["GHSA-928c-mw7v-gxfh"],"analysis":{"component_type":"hardware_firmware","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"InsydeH2O BIOS","requires_auth":"high_privilege","summary":"Attackers can execute arbitrary code in System Management Mode via a numeric range comparison flaw in InsydeH2O BIOS firmware.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"insydeh2o","vendor":"insyde"},{"product":"simatic_field_pg_m5_firmware","vendor":"siemens"},{"product":"simatic_field_pg_m6_firmware","vendor":"siemens"},{"product":"simatic_ipc127e_firmware","vendor":"siemens"},{"product":"simatic_ipc227g_firmware","vendor":"siemens"},{"product":"simatic_ipc277g_firmware","vendor":"siemens"},{"product":"simatic_ipc327g_firmware","vendor":"siemens"},{"product":"simatic_ipc377g_firmware","vendor":"siemens"},{"product":"simatic_ipc427e_firmware","vendor":"siemens"},{"product":"simatic_ipc477e_firmware","vendor":"siemens"},{"product":"simatic_ipc627e_firmware","vendor":"siemens"},{"product":"simatic_ipc647e_firmware","vendor":"siemens"},{"product":"simatic_ipc677e_firmware","vendor":"siemens"},{"product":"simatic_ipc847e_firmware","vendor":"siemens"},{"product":"simatic_itp1000_firmware","vendor":"siemens"}],"cvss":{"score":8.2,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"description":"An issue was discovered in SdHostDriver in the kernel 5.0 through 5.5 in Insyde InsydeH2O. There is an SMM callout that allows an attacker to access the System Management Mode and execute arbitrary code. This occurs because of a Numeric Range Comparison Without a Minimum Check.","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":"Code injection in n/a","id":"CVE-2021-41838","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"insyde:insydeh2o","products":["insyde:insydeh2o"],"type":"code_injection","year":"2021"},"n_packages":0,"n_references":4,"next":{"headline":"Memory corruption in n/a","id":"CVE-2021-41839"},"packages":[],"prev":{"headline":"Memory corruption in n/a","id":"CVE-2021-41837"},"products":["n/a"],"published":"2022-02-03","related":[{"cvss_score":9.8,"headline":"Missing authorization in n/a","id":"CVE-2021-41842","kev_date_added":null,"published":"2022-01-05"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2023-22612","kev_date_added":null,"published":"2023-04-11"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2023-22613","kev_date_added":null,"published":"2023-04-11"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2023-22614","kev_date_added":null,"published":"2023-04-11"},{"cvss_score":8.4,"headline":"Memory corruption in n/a","id":"CVE-2023-22615","kev_date_added":null,"published":"2023-04-11"},{"cvss_score":8.2,"headline":"Memory corruption in n/a","id":"CVE-2022-36448","kev_date_added":null,"published":"2022-09-28"},{"cvss_score":8.2,"headline":"Memory corruption in n/a","id":"CVE-2022-35893","kev_date_added":null,"published":"2022-09-23"}],"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":"2026-08-11","vendors":["n/a"]},"summary":"Attackers can execute arbitrary code in System Management Mode via a numeric range comparison flaw in InsydeH2O BIOS firmware.","url":"https://insights.sbomify.com/CVE-2021-41838/"}