{"answers":{"affected":"It affects 11 products.","exploited":"There is no known exploitation of CVE-2021-31346 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-31346 is a high-severity denial of service vulnerability in Siemens Capital Embedded AR Classic 431-422, published on 9 Nov 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-2021-31346 and fix it if it is affected.\n\nWhat it is: CVE-2021-31346 is a high-severity denial of service vulnerability in Siemens Capital Embedded AR Classic 431-422, published on 9 Nov 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-2021-31346 in the wild and no public exploit code.\n\nAffected product: Siemens Capital Embedded AR Classic 431-422. 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-2021-31346/ (Markdown: https://insights.sbomify.com/CVE-2021-31346/index.md)","id":"CVE-2021-31346","markdown":"https://insights.sbomify.com/CVE-2021-31346/index.md","name":"CVE-2021-31346","record":{"aliases":["GHSA-gwc7-j4mc-q8fw"],"analysis":{"component_type":"ics_ot","fix_type":"upgrade","impacts":["denial_of_service","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Siemens industrial controllers","requires_auth":"none","summary":"Attackers can cause denial of service or information leaks in Siemens industrial devices by sending malformed ICMP packets with unchecked payload lengths.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"siemens","cpe":[{"product":"apogee_modular_building_controller_firmware","vendor":"siemens"},{"product":"apogee_modular_equiment_controller_firmware","vendor":"siemens"},{"product":"apogee_pxc_compact_firmware","vendor":"siemens"},{"product":"apogee_pxc_modular_firmware","vendor":"siemens"},{"product":"capital_vstar","vendor":"siemens"},{"product":"nucleus_net","vendor":"siemens"},{"product":"nucleus_readystart_v3","vendor":"siemens"},{"product":"nucleus_readystart_v4","vendor":"siemens"},{"product":"nucleus_source_code","vendor":"siemens"},{"product":"talon_tc_compact_firmware","vendor":"siemens"},{"product":"talon_tc_modular_firmware","vendor":"siemens"}],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-1284","name":"Improper Validation of Specified Quantity in Input"}],"description":"A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions \u003c V2303), PLUSCONTROL 1st Gen (All versions), SIMOTICS CONNECT 400 (All versions \u003c V0.5.0.0), SIMOTICS CONNECT 400 (All versions \u003c V1.0.0.0). The total length of an ICMP payload (set in the IP header) is unchecked. This may lead to various side effects, including Information Leak and Denial-of-Service conditions, depending on the network buffer organization in memory. (FSMD-2021-0007)","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Denial of service in Capital Embedded AR Classic 431-422","id":"CVE-2021-31346","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":0,"n_references":10,"next":{"headline":"Memory corruption in n/a","id":"CVE-2021-31347"},"packages":[],"prev":{"headline":"Denial of service in Capital Embedded AR Classic 431-422","id":"CVE-2021-31345"},"products":["Capital Embedded AR Classic 431-422","Capital Embedded AR Classic R20-11","PLUSCONTROL 1st Gen","SIMOTICS CONNECT 400"],"published":"2021-11-09","related":[{"cvss_score":9.8,"headline":"Memory corruption in APOGEE MBC (PPC) (BACnet)","id":"CVE-2021-31884","kev_date_added":null,"published":"2021-11-09"},{"cvss_score":9.8,"headline":"Memory corruption in APOGEE MBC (PPC) (BACnet)","id":"CVE-2021-31886","kev_date_added":null,"published":"2021-11-09"},{"cvss_score":8.8,"headline":"Memory corruption in APOGEE MBC (PPC) (BACnet)","id":"CVE-2021-31887","kev_date_added":null,"published":"2021-11-09"},{"cvss_score":8.8,"headline":"Memory corruption in APOGEE MBC (PPC) (BACnet)","id":"CVE-2021-31888","kev_date_added":null,"published":"2021-11-09"},{"cvss_score":8.7,"headline":"Denial of service in APOGEE MBC (PPC) (BACnet)","id":"CVE-2022-38371","kev_date_added":null,"published":"2022-10-11"},{"cvss_score":7.5,"headline":"Denial of service in Capital Embedded AR Classic 431-422","id":"CVE-2021-31345","kev_date_added":null,"published":"2021-11-09"}],"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":"2025-03-11","vendors":["Siemens"]},"summary":"Attackers can cause denial of service or information leaks in Siemens industrial devices by sending malformed ICMP packets with unchecked payload lengths.","url":"https://insights.sbomify.com/CVE-2021-31346/"}