{"answers":{"affected":"It affects 8 products.","exploited":"There is no known exploitation of CVE-2021-20599 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-20599 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-20599 is a critical vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series SIL2 Process CPU R08PSFCPU, published on 14 Oct 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-2021-20599 and fix it if it is affected.\n\nWhat it is: CVE-2021-20599 is a critical vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series SIL2 Process CPU R08PSFCPU, published on 14 Oct 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-2021-20599 in the wild and no public exploit code.\n\nAffected product: Mitsubishi Electric Corporation MELSEC iQ-R Series SIL2 Process CPU R08PSFCPU. 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-2021-20599/ (Markdown: https://insights.sbomify.com/CVE-2021-20599/index.md)","id":"CVE-2021-20599","markdown":"https://insights.sbomify.com/CVE-2021-20599/index.md","name":"CVE-2021-20599","record":{"aliases":["GHSA-vf46-vqq9-hg36"],"analysis":{"component_type":"ics_ot","fix_type":"patch","impacts":["account_takeover","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Mitsubishi PLC firmware","requires_auth":"none","summary":"Remote attackers can intercept cleartext credentials to gain unauthorized access to Mitsubishi MELSEC iQ-R safety and process CPU modules.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Mitsubishi","cpe":[{"product":"r08psfcpu_firmware","vendor":"mitsubishielectric"},{"product":"r08sfcpu_firmware","vendor":"mitsubishielectric"},{"product":"r120psfcpu_firmware","vendor":"mitsubishielectric"},{"product":"r120sfcpu_firmware","vendor":"mitsubishielectric"},{"product":"r16psfcpu_firmware","vendor":"mitsubishielectric"},{"product":"r16sfcpu_firmware","vendor":"mitsubishielectric"},{"product":"r32psfcpu_firmware","vendor":"mitsubishielectric"},{"product":"r32sfcpu_firmware","vendor":"mitsubishielectric"}],"cvss":{"score":9.1,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key"},{"id":"CWE-319","name":"Cleartext Transmission of Sensitive Information"}],"description":"Cleartext Transmission of Sensitive InformationCleartext transmission of sensitive information vulnerability in MELSEC iQ-R series Safety CPU R08/16/32/120SFCPU firmware versions \"26\" and prior and MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU firmware versions \"11\" and prior allows a remote unauthenticated attacker to login to a target CPU module by obtaining credentials other than password.","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":"Information disclosure in MELSEC iQ-R Series SIL2 Process CPU R08PSFCPU","id":"CVE-2021-20599","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"Denial of service in Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V","id":"CVE-2021-20600"},"packages":[],"prev":{"headline":"Denial of service in MELSEC iQ-R series CPU modules R08/16/32/120SFCPU; R08/16/32/120PSFCPU","id":"CVE-2021-20598"},"products":["MELSEC iQ-R Series SIL2 Process CPU R08PSFCPU","MELSEC iQ-R Series Safety CPU R08SFCPU","MELSEC iQ-R series SIL2 Process CPU R120PSFCPU","MELSEC iQ-R series SIL2 Process CPU R16PSFCPU","MELSEC iQ-R series SIL2 Process CPU R32PSFCPU","MELSEC iQ-R series Safety CPU R120SFCPU","MELSEC iQ-R series Safety CPU R16SFCPU","MELSEC iQ-R series Safety CPU R32SFCPU"],"published":"2021-10-14","related":[{"cvss_score":9.1,"headline":"Information disclosure in Mitsubishi Electric MELSEC iQ-R series Safety CPU modules R08/16/32/120SFCPU; Mitsubishi Electric MELSEC iQ-R series SIL2 Process CPU modules R08/16/32/120PSFCPU","id":"CVE-2021-20597","kev_date_added":null,"published":"2021-08-06"},{"cvss_score":7.5,"headline":"Information disclosure in Mitsubishi Electric MELSEC iQ-R series Safety CPU modules R08/16/32/120SFCPU; Mitsubishi Electric MELSEC iQ-R series SIL2 Process CPU modules R08/16/32/120PSFCPU","id":"CVE-2021-20594","kev_date_added":null,"published":"2021-08-06"},{"cvss_score":6.5,"headline":"Information disclosure in MELSEC iQ-R Series SIL2 Process CPU R08PSFCPU","id":"CVE-2023-6815","kev_date_added":null,"published":"2024-02-13"},{"cvss_score":5.3,"headline":"Denial of service in MELSEC iQ-R series CPU modules R08/16/32/120SFCPU; R08/16/32/120PSFCPU","id":"CVE-2021-20598","kev_date_added":null,"published":"2021-08-06"}],"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":"total"},"state":"PUBLISHED","updated":"2024-08-03","vendors":["Mitsubishi Electric Corporation"]},"summary":"Remote attackers can intercept cleartext credentials to gain unauthorized access to Mitsubishi MELSEC iQ-R safety and process CPU modules.","url":"https://insights.sbomify.com/CVE-2021-20599/"}