{"answers":{"affected":"It affects 19 products.","exploited":"There is no known exploitation of CVE-2021-27420 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-27420 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-27420 is a medium-severity denial of service vulnerability in GE UR family, published on 23 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-27420 and fix it if it is affected.\n\nWhat it is: CVE-2021-27420 is a medium-severity denial of service vulnerability in GE UR family, published on 23 Mar 2022. 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-2021-27420 in the wild and no public exploit code.\n\nAffected product: GE UR family. 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-2021-27420/ (Markdown: https://insights.sbomify.com/CVE-2021-27420/index.md)","id":"CVE-2021-27420","markdown":"https://insights.sbomify.com/CVE-2021-27420/index.md","name":"CVE-2021-27420","record":{"aliases":["GHSA-vw3w-wmxj-qpxw"],"analysis":{"component_type":"ics_ot","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"GE UR relay firmware","requires_auth":"none","summary":"An attacker can cause the GE UR relay web server to become unresponsive by sending unsupported HTTP verbs, temporarily blocking web access.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"icscert","cpe":[{"product":"multilin_b30_firmware","vendor":"ge"},{"product":"multilin_b90_firmware","vendor":"ge"},{"product":"multilin_c30_firmware","vendor":"ge"},{"product":"multilin_c60_firmware","vendor":"ge"},{"product":"multilin_c70_firmware","vendor":"ge"},{"product":"multilin_c95_firmware","vendor":"ge"},{"product":"multilin_d30_firmware","vendor":"ge"},{"product":"multilin_d60_firmware","vendor":"ge"},{"product":"multilin_f35_firmware","vendor":"ge"},{"product":"multilin_f60_firmware","vendor":"ge"},{"product":"multilin_g30_firmware","vendor":"ge"},{"product":"multilin_g60_firmware","vendor":"ge"},{"product":"multilin_l30_firmware","vendor":"ge"},{"product":"multilin_l60_firmware","vendor":"ge"},{"product":"multilin_l90_firmware","vendor":"ge"},{"product":"multilin_m60_firmware","vendor":"ge"},{"product":"multilin_n60_firmware","vendor":"ge"},{"product":"multilin_t35_firmware","vendor":"ge"},{"product":"multilin_t60_firmware","vendor":"ge"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"GE UR firmware versions prior to version 8.1x web server task does not properly handle receipt of unsupported HTTP verbs, resulting in the web server becoming temporarily unresponsive after receiving a series of unsupported HTTP requests. When unresponsive, the web server is inaccessible. By itself, this is not particularly significant as the relay remains effective in all other functionality and communication channels.","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":"GE UR family input validation","id":"CVE-2021-27420","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":"NXP MCUXpresso SDK Integer Overflow or Wraparound","id":"CVE-2021-27421"},"packages":[],"prev":{"headline":"uClibc-ng Integer Overflow or Wraparound","id":"CVE-2021-27419"},"products":["UR family"],"published":"2022-03-23","related":[{"cvss_score":9.8,"headline":"GE UR family insecure default variable initialization","id":"CVE-2021-27426","kev_date_added":null,"published":"2022-03-23"},{"cvss_score":9.8,"headline":"GE UR family Unrestricted Upload of File with Dangerous Type","id":"CVE-2021-27428","kev_date_added":null,"published":"2022-03-23"},{"cvss_score":7.5,"headline":"GE UR family exposure of sensitive information to an unauthorized actor","id":"CVE-2021-27422","kev_date_added":null,"published":"2022-03-23"},{"cvss_score":5.3,"headline":"GE UR family input validation","id":"CVE-2021-27418","kev_date_added":null,"published":"2022-03-23"},{"cvss_score":5.3,"headline":"GE UR family exposure of sensitive information to an unauthorized actor","id":"CVE-2021-27424","kev_date_added":null,"published":"2022-03-23"}],"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-04-16","vendors":["GE"]},"summary":"An attacker can cause the GE UR relay web server to become unresponsive by sending unsupported HTTP verbs, temporarily blocking web access.","url":"https://insights.sbomify.com/CVE-2021-27420/"}