{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2020-28220 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-28220 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-28220 is a medium-severity memory corruption vulnerability in Modicon M258 Firmware (All versions prior to V5.0.4.11) and SoMachine/SoMachine Motion software (All versions), published on 11 Dec 2020. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-28220 and fix it if it is affected.\n\nWhat it is: CVE-2020-28220 is a medium-severity memory corruption vulnerability in Modicon M258 Firmware (All versions prior to V5.0.4.11) and SoMachine/SoMachine Motion software (All versions), published on 11 Dec 2020. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-28220 in the wild and no public exploit code.\n\nAffected product: Modicon M258 Firmware (All versions prior to V5.0.4.11) and SoMachine/SoMachine Motion software (All versions). 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-2020-28220/ (Markdown: https://insights.sbomify.com/CVE-2020-28220/index.md)","id":"CVE-2020-28220","markdown":"https://insights.sbomify.com/CVE-2020-28220/index.md","name":"CVE-2020-28220","record":{"aliases":["GHSA-xfpf-x83h-3xxj"],"analysis":{"component_type":"ics_ot","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Modicon PLC firmware","requires_auth":"high_privilege","summary":"A buffer overflow in Modicon M258 firmware allows attackers to execute arbitrary code or cause denial of service via crafted file transfers.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"schneider","cpe":[{"product":"modicon_m258_firmware","vendor":"schneider-electric"},{"product":"somachine","vendor":"schneider-electric"},{"product":"somachine_motion","vendor":"schneider-electric"}],"cvss":{"score":4.7,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"description":"A CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability exists in Modicon M258 Firmware (All versions prior to V5.0.4.11) and SoMachine/SoMachine Motion software (All versions), that could cause a buffer overflow when the length of a file transferred to the webserver is not verified.","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 Modicon M258 Firmware (All versions prior to V5.0.4.11) and SoMachine/SoMachine Motion software (All versions)","id":"CVE-2020-28220","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Code injection in EcoStruxure™ Operator Terminal Expert 3.1 Service Pack 1A and prior running on Harmony HMIs HMIST6 Series, HMIG3U in HMIGTU Series, HMISTO Series and Pro-face BLUE 3.1 Service Pack 1A and prior running on Pro-face HMIs: ST6000 Series, SP-5B41 in SP5000 Series, GP4100 Series","id":"CVE-2020-28221"},"packages":[],"prev":{"headline":"Information disclosure in EcoStruxure Geo SCADA Expert 2019 (Original release and Monthly Updates to September 2020, from 81.7268.1 to 81.7578.1) and EcoStruxure Geo SCADA Expert 2020 (Original release and Monthly Updates to September 2020, from 83.7551.1 to 83.7578.1)","id":"CVE-2020-28219"},"products":["Modicon M258 Firmware (All versions prior to V5.0.4.11) and SoMachine/SoMachine Motion software (All versions)"],"published":"2020-12-11","related":[],"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":"2026-05-28","vendors":["n/a"]},"summary":"A buffer overflow in Modicon M258 firmware allows attackers to execute arbitrary code or cause denial of service via crafted file transfers.","url":"https://insights.sbomify.com/CVE-2020-28220/"}