{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2021-35535 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-35535 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-35535 is a high-severity vulnerability in Hitachi Energy Relion 670 Series, published on 18 Nov 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-2021-35535 and fix it if it is affected.\n\nWhat it is: CVE-2021-35535 is a high-severity vulnerability in Hitachi Energy Relion 670 Series, published on 18 Nov 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-2021-35535 in the wild and no public exploit code.\n\nAffected product: Hitachi Energy Relion 670 Series. 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-2021-35535/ (Markdown: https://insights.sbomify.com/CVE-2021-35535/index.md)","id":"CVE-2021-35535","markdown":"https://insights.sbomify.com/CVE-2021-35535/index.md","name":"CVE-2021-35535","record":{"aliases":["GHSA-v26g-w7c2-rjj3"],"analysis":{"component_type":"ics_ot","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Hitachi Energy Relion","requires_auth":"none","summary":"An attacker with network access can exploit a boot sequence gap to load an older OS version, causing a denial of service on Hitachi Energy Relion devices.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Hitachi Energy","cpe":[{"product":"relion_650_firmware","vendor":"hitachienergy"},{"product":"relion_670_firmware","vendor":"hitachienergy"},{"product":"relion_sam600-io_firmware","vendor":"hitachienergy"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-1188","name":"Initialization of a Resource with an Insecure Default"}],"description":"Insecure Boot Image vulnerability in Hitachi Energy Relion Relion 670/650/SAM600-IO series allows an attacker who manages to get access to the front network port and to cause a reboot sequences of the device may exploit the vulnerability, where there is a tiny time gap during the booting process where an older version of VxWorks is loaded prior to application firmware booting, could exploit the vulnerability in the older version of VxWorks and cause a denial-of-service on the product. This issue affects: Hitachi Energy Relion 670 Series 2.2.2 all revisions; 2.2.3 versions prior to 2.2.3.3. Hitachi Energy Relion 670/650 Series 2.2.0 all revisions; 2.2.4 all revisions. Hitachi Energy Relion 670/650/SAM600-IO 2.2.1 all revisions.","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":"Insufficient Security Control Vulnerability","id":"CVE-2021-35535","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":"Missing authorization in Deal Management","id":"CVE-2021-35536"},"packages":[],"prev":{"headline":"Insufficient Security Control Vulnerability","id":"CVE-2021-35534"},"products":["Relion 670 Series","Relion 670/650 Series","Relion 670/650/SAM600-IO"],"published":"2021-11-18","related":[{"cvss_score":7.5,"headline":"Denial of service in Relion 650 and 670 Series","id":"CVE-2019-18247","kev_date_added":null,"published":"2019-11-27"},{"cvss_score":6.5,"headline":"Denial of service in Relion670","id":"CVE-2023-4518","kev_date_added":null,"published":"2023-12-01"},{"cvss_score":4.5,"headline":"Security feature bypass in Relion 670/650/SAM600-IO Series","id":"CVE-2022-3864","kev_date_added":null,"published":"2024-01-04"}],"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":"2024-09-16","vendors":["Hitachi Energy"]},"summary":"An attacker with network access can exploit a boot sequence gap to load an older OS version, causing a denial of service on Hitachi Energy Relion devices.","url":"https://insights.sbomify.com/CVE-2021-35535/"}