{"answers":{"affected":"It affects 7 products.","exploited":"There is no known exploitation of CVE-2021-33485 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-33485 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-33485 is a critical memory corruption vulnerability in Codesys Control Runtime System Toolkit, published on 3 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-33485 and fix it if it is affected.\n\nWhat it is: CVE-2021-33485 is a critical memory corruption vulnerability in Codesys Control Runtime System Toolkit, published on 3 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-33485 in the wild and no public exploit code.\n\nAffected product: Codesys Control Runtime System Toolkit. 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-2021-33485/ (Markdown: https://insights.sbomify.com/CVE-2021-33485/index.md)","id":"CVE-2021-33485","markdown":"https://insights.sbomify.com/CVE-2021-33485/index.md","name":"CVE-2021-33485","record":{"aliases":["GHSA-mrr3-f59g-2946"],"analysis":{"component_type":"ics_ot","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"CODESYS Control Runtime","requires_auth":"none","summary":"A heap-based buffer overflow in CODESYS Control Runtime allows attackers to execute arbitrary code or cause denial of service.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"control","vendor":"codesys"},{"product":"control_rte","vendor":"codesys"},{"product":"control_runtime_system_toolkit","vendor":"codesys"},{"product":"control_win_sl","vendor":"codesys"},{"product":"embedded_target_visu_toolkit","vendor":"codesys"},{"product":"hmi","vendor":"codesys"},{"product":"remote_target_visu_toolkit","vendor":"codesys"}],"cvss":{"score":9.8,"severity":"critical","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"CODESYS Control Runtime system before 3.5.17.10 has a Heap-based Buffer Overflow.","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":"Memory corruption in n/a","id":"CVE-2021-33485","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"codesys:control_runtime_system_toolkit","products":["codesys:control_runtime_system_toolkit"],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in n/a","id":"CVE-2021-33486"},"packages":[],"prev":{"headline":"Hardcoded credentials in n/a","id":"CVE-2021-33484"},"products":["n/a"],"published":"2021-08-03","related":[{"cvss_score":7.5,"headline":"Path traversal in n/a","id":"CVE-2021-36763","kev_date_added":null,"published":"2021-08-03"}],"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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-05-29","vendors":["n/a"]},"summary":"A heap-based buffer overflow in CODESYS Control Runtime allows attackers to execute arbitrary code or cause denial of service.","url":"https://insights.sbomify.com/CVE-2021-33485/"}