{"answers":{"affected":"It affects 24 products.","exploited":"There is no known exploitation of CVE-2021-26343 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-26343 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-26343 is a medium-severity vulnerability in Amd Epyc 72f3 Firmware, published on 10 Jan 2023. 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-2021-26343 and fix it if it is affected.\n\nWhat it is: CVE-2021-26343 is a medium-severity vulnerability in Amd Epyc 72f3 Firmware, published on 10 Jan 2023. 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-2021-26343 in the wild and no public exploit code.\n\nAffected product: Amd Epyc 72f3 Firmware. 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-2021-26343/ (Markdown: https://insights.sbomify.com/CVE-2021-26343/index.md)","id":"CVE-2021-26343","markdown":"https://insights.sbomify.com/CVE-2021-26343/index.md","name":"CVE-2021-26343","record":{"aliases":["GHSA-m338-vvr5-wrph"],"analysis":{"component_type":"hardware_firmware","fix_type":"patch","impacts":["data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"AMD EPYC firmware","requires_auth":"low_privilege","summary":"Malicious supervisor software can exploit insufficient validation in AMD EPYC BIOS to disclose sensitive memory contents.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"AMD","cpe":[{"product":"epyc_7003_firmware","vendor":"amd"},{"product":"epyc_72f3_firmware","vendor":"amd"},{"product":"epyc_7313_firmware","vendor":"amd"},{"product":"epyc_7313p_firmware","vendor":"amd"},{"product":"epyc_7343_firmware","vendor":"amd"},{"product":"epyc_7373x_firmware","vendor":"amd"},{"product":"epyc_73f3_firmware","vendor":"amd"},{"product":"epyc_7413_firmware","vendor":"amd"},{"product":"epyc_7443_firmware","vendor":"amd"},{"product":"epyc_7443p_firmware","vendor":"amd"},{"product":"epyc_7453_firmware","vendor":"amd"},{"product":"epyc_74f3_firmware","vendor":"amd"},{"product":"epyc_7513_firmware","vendor":"amd"},{"product":"epyc_7543_firmware","vendor":"amd"},{"product":"epyc_7543p_firmware","vendor":"amd"},{"product":"epyc_7573x_firmware","vendor":"amd"},{"product":"epyc_75f3_firmware","vendor":"amd"},{"product":"epyc_7643_firmware","vendor":"amd"},{"product":"epyc_7663_firmware","vendor":"amd"},{"product":"epyc_7713_firmware","vendor":"amd"},{"product":"epyc_7713p_firmware","vendor":"amd"},{"product":"epyc_7743_firmware","vendor":"amd"},{"product":"epyc_7763_firmware","vendor":"amd"},{"product":"epyc_7773x_firmware","vendor":"amd"}],"cvss":{"score":5.5,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-668","name":"Exposure of Resource to Wrong Sphere"}],"description":"Insufficient validation in ASP BIOS and DRTM commands may allow malicious supervisor x86 software to disclose the contents of sensitive memory which may result in information disclosure.","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":"Information disclosure in 3rd Gen EPYC","id":"CVE-2021-26343","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"amd:epyc_72f3_firmware","products":["amd:epyc_72f3_firmware","amd:epyc_7313_firmware","amd:epyc_7313p_firmware","amd:epyc_7343_firmware","amd:epyc_7373x_firmware","amd:epyc_73f3_firmware","amd:epyc_7413_firmware","amd:epyc_7443_firmware","amd:epyc_7443p_firmware","amd:epyc_7453_firmware","amd:epyc_74f3_firmware","amd:epyc_7513_firmware","amd:epyc_7543_firmware","amd:epyc_7543p_firmware","amd:epyc_7573x_firmware","amd:epyc_75f3_firmware","amd:epyc_7643_firmware","amd:epyc_7663_firmware","amd:epyc_7713_firmware","amd:epyc_7713p_firmware","amd:epyc_7763_firmware","amd:epyc_7773x_firmware"],"type":"information_disclosure","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Memory corruption in AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics","id":"CVE-2021-26344"},"packages":[],"prev":{"headline":"Information disclosure in EPYC™ Processors","id":"CVE-2021-26342"},"products":["3rd Gen EPYC"],"published":"2023-01-10","related":[{"cvss_score":7.8,"headline":"Code injection in 3rd Gen AMD EPYC™","id":"CVE-2021-26315","kev_date_added":null,"published":"2021-11-16"},{"cvss_score":7.5,"headline":"Denial of service in 3rd Gen EPYC","id":"CVE-2023-20530","kev_date_added":null,"published":"2023-01-10"},{"cvss_score":5.5,"headline":"Denial of service in 3rd Gen EPYC","id":"CVE-2021-26355","kev_date_added":null,"published":"2023-01-10"},{"cvss_score":5.5,"headline":"Information disclosure in 3rd Gen EPYC","id":"CVE-2021-26404","kev_date_added":null,"published":"2023-01-10"},{"cvss_score":5.5,"headline":"Information disclosure in 3rd Gen AMD EPYC™","id":"CVE-2021-26327","kev_date_added":null,"published":"2021-11-16"},{"cvss_score":4.4,"headline":"Information disclosure in 3rd Gen AMD EPYC™ Processors","id":"CVE-2023-20594","kev_date_added":null,"published":"2023-09-20"}],"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":"partial"},"state":"PUBLISHED","updated":"2025-04-09","vendors":["AMD"]},"summary":"Malicious supervisor software can exploit insufficient validation in AMD EPYC BIOS to disclose sensitive memory contents.","url":"https://insights.sbomify.com/CVE-2021-26343/"}