{"answers":{"affected":"It affects 24 products.","exploited":"There is no known exploitation of CVE-2021-20986 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-20986 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-20986 is a high-severity denial of service vulnerability in Hilscher OHV, 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-2021-20986 and fix it if it is affected.\n\nWhat it is: CVE-2021-20986 is a high-severity denial of service vulnerability in Hilscher OHV, 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-2021-20986 in the wild and no public exploit code.\n\nAffected product: Hilscher OHV. 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-2021-20986/ (Markdown: https://insights.sbomify.com/CVE-2021-20986/index.md)","id":"CVE-2021-20986","markdown":"https://insights.sbomify.com/CVE-2021-20986/index.md","name":"CVE-2021-20986","record":{"aliases":["GHSA-4p8g-xcvq-m8r7"],"analysis":{"component_type":"ics_ot","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"PROFINET IO Device","requires_auth":"none","summary":"Attackers can cause loss of cyclic or interruption of acyclic communication in Hilscher PROFINET IO Devices, disrupting industrial operations.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CERTVDE","cpe":[{"product":"profinet_io_device_firmware","vendor":"hilscher"},{"product":"ohv-f230-b17_firmware","vendor":"pepperl-fuchs"},{"product":"oit500-f113b17-cb_firmware","vendor":"pepperl-fuchs"},{"product":"pcv100-f200-b17-v1d-6011-6997_firmware","vendor":"pepperl-fuchs"},{"product":"pcv100-f200-b17-v1d-6011-8203_firmware","vendor":"pepperl-fuchs"},{"product":"pcv100-f200-b17-v1d-6011_firmware","vendor":"pepperl-fuchs"},{"product":"pcv100-f200-b17-v1d_firmware","vendor":"pepperl-fuchs"},{"product":"pcv50-f200-b17-v1d_firmware","vendor":"pepperl-fuchs"},{"product":"pcv80-f200-b17-v1d_firmware","vendor":"pepperl-fuchs"},{"product":"pgv100-f200-b17-v1d-7477_firmware","vendor":"pepperl-fuchs"},{"product":"pgv100-f200a-b17-v1d_firmware","vendor":"pepperl-fuchs"},{"product":"pgv100a-f200-b28-v1d_firmware","vendor":"pepperl-fuchs"},{"product":"pgv100a-f200a-b28-v1d_firmware","vendor":"pepperl-fuchs"},{"product":"pgv100aq-f200-b28-v1d_firmware","vendor":"pepperl-fuchs"},{"product":"pgv100aq-f200a-b28-v1d_firmware","vendor":"pepperl-fuchs"},{"product":"pgv150i-f200a-b17-v1d_firmware","vendor":"pepperl-fuchs"},{"product":"pha_firmware","vendor":"pepperl-fuchs"},{"product":"pxv100-f200-b17-v1d-3636_firmware","vendor":"pepperl-fuchs"},{"product":"pxv100-f200-b17-v1d_firmware","vendor":"pepperl-fuchs"},{"product":"pxv100a-f200-b28-v1d-6011_firmware","vendor":"pepperl-fuchs"},{"product":"pxv100a-f200-b28-v1d_firmware","vendor":"pepperl-fuchs"},{"product":"pxv100aq-f200-b28-v1d-6011_firmware","vendor":"pepperl-fuchs"},{"product":"pxv100aq-f200-b28-v1d_firmware","vendor":"pepperl-fuchs"},{"product":"wcs_firmware","vendor":"pepperl-fuchs"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"A Denial of Service vulnerability was found in Hilscher PROFINET IO Device V3 in versions prior to V3.14.0.7. This may lead to unexpected loss of cyclic communication or interruption of acyclic communication.","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: Denial of Service vulnerability in PROFINET IO Device","id":"CVE-2021-20986","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Hilscher: EtherNet/IP stack crash for specific CIP service","id":"CVE-2021-20987"},"packages":[],"prev":{"headline":"Cross-site scripting in Canon laser printers and small office multifunctional printers","id":"CVE-2021-20877"},"products":["OHV","OIT","PCV/PXV/PGV","PHA","PROFINET IO Device","PXV/PGV B28 Profisafe","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 loss of cyclic or interruption of acyclic communication in Hilscher PROFINET IO Devices, disrupting industrial operations.","url":"https://insights.sbomify.com/CVE-2021-20986/"}