{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-13556 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-13556 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-13556 is a critical memory corruption vulnerability in EIP Stack Group, published on 11 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-13556 and fix it if it is affected.\n\nWhat it is: CVE-2020-13556 is a critical memory corruption vulnerability in EIP Stack Group, published on 11 Dec 2020. 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-2020-13556 in the wild and no public exploit code.\n\nAffected product: EIP Stack Group. 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-2020-13556/ (Markdown: https://insights.sbomify.com/CVE-2020-13556/index.md)","id":"CVE-2020-13556","markdown":"https://insights.sbomify.com/CVE-2020-13556/index.md","name":"CVE-2020-13556","record":{"aliases":["GHSA-vp7f-g57q-p9jx"],"analysis":{"component_type":"ics_ot","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Industrial Ethernet/IP stack","requires_auth":"none","summary":"Remote attackers can execute arbitrary code via crafted network requests exploiting an out-of-bounds write in the OpENer Ethernet/IP server.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"talos","cpe":[{"product":"opener","vendor":"opener_project"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"An out-of-bounds write vulnerability exists in the Ethernet/IP server functionality of EIP Stack Group OpENer 2.3 and development commit 8c73bf3. A specially crafted series of network requests can lead to remote code execution. An attacker can send a sequence of requests to trigger this vulnerability.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Memory corruption in EIP Stack Group","id":"CVE-2020-13556","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":"Use after free in Foxit","id":"CVE-2020-13557"},"packages":[],"prev":{"headline":"Privilege escalation in Advantech","id":"CVE-2020-13555"},"products":["EIP Stack Group"],"published":"2020-12-11","related":[{"cvss_score":10,"headline":"Memory corruption in OpENer","id":"CVE-2022-43604","kev_date_added":null,"published":"2023-03-16"},{"cvss_score":10,"headline":"Memory corruption in OpENer","id":"CVE-2022-43605","kev_date_added":null,"published":"2023-03-16"},{"cvss_score":9.8,"headline":"Integer overflow in n/a","id":"CVE-2026-51540","kev_date_added":null,"published":"2026-07-13"},{"cvss_score":9.1,"headline":"Integer overflow in n/a","id":"CVE-2026-51536","kev_date_added":null,"published":"2026-07-13"},{"cvss_score":9.1,"headline":"Memory corruption in n/a","id":"CVE-2026-51537","kev_date_added":null,"published":"2026-07-13"},{"cvss_score":9.1,"headline":"Auth bypass in n/a","id":"CVE-2026-51538","kev_date_added":null,"published":"2026-07-13"}],"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":"2024-08-04","vendors":["n/a"]},"summary":"Remote attackers can execute arbitrary code via crafted network requests exploiting an out-of-bounds write in the OpENer Ethernet/IP server.","url":"https://insights.sbomify.com/CVE-2020-13556/"}