{"answers":{"affected":"It affects 8 products.","exploited":"There is no known exploitation of CVE-2021-20987 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-20987 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-20987 is a high-severity memory corruption vulnerability in Hilscher EtherNet/IP Core V2, published on 16 Feb 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-2021-20987 and fix it if it is affected.\n\nWhat it is: CVE-2021-20987 is a high-severity memory corruption vulnerability in Hilscher EtherNet/IP Core V2, published on 16 Feb 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-2021-20987 in the wild and no public exploit code.\n\nAffected product: Hilscher EtherNet/IP Core V2. 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-2021-20987/ (Markdown: https://insights.sbomify.com/CVE-2021-20987/index.md)","id":"CVE-2021-20987","markdown":"https://insights.sbomify.com/CVE-2021-20987/index.md","name":"CVE-2021-20987","record":{"aliases":["GHSA-r5x8-6vj6-82q6"],"analysis":{"component_type":"ics_ot","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Industrial Ethernet Stack","requires_auth":"none","summary":"Attackers can cause device crashes or execute arbitrary code via network packets in Hilscher EtherNet/IP stacks, impacting industrial control systems.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CERTVDE","cpe":[{"product":"ethernet\\/ip_adapter_firmware","vendor":"hilscher"},{"product":"pcv100-f200-b25-v1d-6011-6720_firmware","vendor":"pepperl-fuchs"},{"product":"pcv100-f200-b25-v1d-6011_firmware","vendor":"pepperl-fuchs"},{"product":"pcv50-f200-b25-v1d_firmware","vendor":"pepperl-fuchs"},{"product":"pcv80-f200-b25-v1d_firmware","vendor":"pepperl-fuchs"},{"product":"pxv100-f200-b25-v1d_firmware","vendor":"pepperl-fuchs"},{"product":"pxv100i-f200-b25-v1d_firmware","vendor":"pepperl-fuchs"},{"product":"wcs_firmware","vendor":"pepperl-fuchs"}],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"A denial of service and memory corruption vulnerability was found in Hilscher EtherNet/IP Core V2 prior to V2.13.0.21that may lead to code injection through network or make devices crash without recovery.","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":"Hilscher: EtherNet/IP stack crash for specific CIP service","id":"CVE-2021-20987","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Hilscher rcX RTOS: Wrong handling of the UDP checksum","id":"CVE-2021-20988"},"packages":[],"prev":{"headline":"Hilscher: Denial of Service vulnerability in PROFINET IO Device","id":"CVE-2021-20986"},"products":["EtherNet/IP Core V2","PCV/PXV/PGV","WCS"],"published":"2021-02-16","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-09-16","vendors":["Hilscher","Pepper+Fuchs"]},"summary":"Attackers can cause device crashes or execute arbitrary code via network packets in Hilscher EtherNet/IP stacks, impacting industrial control systems.","url":"https://insights.sbomify.com/CVE-2021-20987/"}