{"answers":{"affected":"It affects 16 products.","exploited":"There is no known exploitation of CVE-2021-22731 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-22731 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-22731 is a critical authentication bypass vulnerability in Modicon Managed Switch MCSESM* and MCSESP* V8.21 and prior, published on 26 May 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-2021-22731 and fix it if it is affected.\n\nWhat it is: CVE-2021-22731 is a critical authentication bypass vulnerability in Modicon Managed Switch MCSESM* and MCSESP* V8.21 and prior, published on 26 May 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-2021-22731 in the wild and no public exploit code.\n\nAffected product: Modicon Managed Switch MCSESM* and MCSESP* V8.21 and prior. 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-2021-22731/ (Markdown: https://insights.sbomify.com/CVE-2021-22731/index.md)","id":"CVE-2021-22731","markdown":"https://insights.sbomify.com/CVE-2021-22731/index.md","name":"CVE-2021-22731","record":{"aliases":["GHSA-6q5v-82v5-mpf9"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["privilege_escalation","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Modicon Managed Switch","requires_auth":"none","summary":"Remote attackers can change passwords via HTTP/HTTPS if basic user info is known, leading to unauthorized access on Modicon switches.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"schneider","cpe":[{"product":"mcsesm043f23f0_firmware","vendor":"schneider-electric"},{"product":"mcsesm053f1cs0_firmware","vendor":"schneider-electric"},{"product":"mcsesm053f1cu0_firmware","vendor":"schneider-electric"},{"product":"mcsesm063f2cs0_firmware","vendor":"schneider-electric"},{"product":"mcsesm063f2cu0_firmware","vendor":"schneider-electric"},{"product":"mcsesm083f23f0_firmware","vendor":"schneider-electric"},{"product":"mcsesm083f23f0h_firmware","vendor":"schneider-electric"},{"product":"mcsesm093f1cs0_firmware","vendor":"schneider-electric"},{"product":"mcsesm093f1cu0_firmware","vendor":"schneider-electric"},{"product":"mcsesm103f2cs0_firmware","vendor":"schneider-electric"},{"product":"mcsesm103f2cs0h_firmware","vendor":"schneider-electric"},{"product":"mcsesm103f2cu0_firmware","vendor":"schneider-electric"},{"product":"mcsesm103f2cu0h_firmware","vendor":"schneider-electric"},{"product":"mcsesm123f2lg0_firmware","vendor":"schneider-electric"},{"product":"mcsesp083f23g0_firmware","vendor":"schneider-electric"},{"product":"mcsesp083f23g0t_firmware","vendor":"schneider-electric"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-640","name":"Weak Password Recovery Mechanism for Forgotten Password"}],"description":"Weak Password Recovery Mechanism for Forgotten Password vulnerability exists on Modicon Managed Switch MCSESM* and MCSESP* V8.21 and prior which could cause an unauthorized password change through HTTP / HTTPS when basic user information is known by a remote attacker.","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":"Auth bypass in Modicon Managed Switch MCSESM* and MCSESP* V8.21 and prior","id":"CVE-2021-22731","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Privilege escalation in homeLYnk (Wiser For KNX) and spaceLYnk V2.60 and prior","id":"CVE-2021-22732"},"packages":[],"prev":{"headline":"Hardcoded credentials in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 all versions prior to R8 V3.4.0.1), and EVlink Smart Wallbox (EVB1A all versions prior to R8 V3.4.0.1 )","id":"CVE-2021-22730"},"products":["Modicon Managed Switch MCSESM* and MCSESP* V8.21 and prior"],"published":"2021-05-26","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":"2024-08-03","vendors":["n/a"]},"summary":"Remote attackers can change passwords via HTTP/HTTPS if basic user info is known, leading to unauthorized access on Modicon switches.","url":"https://insights.sbomify.com/CVE-2021-22731/"}