{"answers":{"affected":"It affects 15 products.","exploited":"There is no known exploitation of CVE-2021-21004 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-21004 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-21004 is a high-severity cross-site scripting vulnerability in Phoenix Contact FL NAT, published on 25 Jun 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-21004 and fix it if it is affected.\n\nWhat it is: CVE-2021-21004 is a high-severity cross-site scripting vulnerability in Phoenix Contact FL NAT, published on 25 Jun 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-21004 in the wild and no public exploit code.\n\nAffected product: Phoenix Contact FL NAT. 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-2021-21004/ (Markdown: https://insights.sbomify.com/CVE-2021-21004/index.md)","id":"CVE-2021-21004","markdown":"https://insights.sbomify.com/CVE-2021-21004/index.md","name":"CVE-2021-21004","record":{"aliases":["GHSA-p92q-6vw3-958m"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["code_execution","account_takeover"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Industrial network switch","requires_auth":"none","summary":"Attackers can inject malicious code via LLDP frames into the web management interface, allowing execution in the client's browser.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CERTVDE","cpe":[{"product":"fl_nat_smn_8tx-m_firmware","vendor":"phoenixcontact"},{"product":"fl_nat_smn_8tx_firmware","vendor":"phoenixcontact"},{"product":"fl_switch_smcs_14tx\\/2fx-sm_firmware","vendor":"phoenixcontact"},{"product":"fl_switch_smcs_14tx\\/2fx_firmware","vendor":"phoenixcontact"},{"product":"fl_switch_smcs_16tx_firmware","vendor":"phoenixcontact"},{"product":"fl_switch_smcs_4tx-pn_firmware","vendor":"phoenixcontact"},{"product":"fl_switch_smcs_6gt\\/2sfp_firmware","vendor":"phoenixcontact"},{"product":"fl_switch_smcs_6tx\\/2sfp_firmware","vendor":"phoenixcontact"},{"product":"fl_switch_smcs_8gt_firmware","vendor":"phoenixcontact"},{"product":"fl_switch_smcs_8tx-pn_firmware","vendor":"phoenixcontact"},{"product":"fl_switch_smcs_8tx_firmware","vendor":"phoenixcontact"},{"product":"fl_switch_smn_6tx\\/2fx_firmware","vendor":"phoenixcontact"},{"product":"fl_switch_smn_6tx\\/2fx_sm_firmware","vendor":"phoenixcontact"},{"product":"fl_switch_smn_6tx\\/2pof-pn_firmware","vendor":"phoenixcontact"},{"product":"fl_switch_smn_8tx-pn_firmware","vendor":"phoenixcontact"}],"cvss":{"score":7.4,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"In Phoenix Contact FL SWITCH SMCS series products in multiple versions an attacker may insert malicious code via LLDP frames into the web-based management which could then be executed by the client.","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":"Cross-site Scripting Vulnerability in Phoenix Contact FL SWITCH SMCS series products","id":"CVE-2021-21004","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Race Condition Vulnerability in Phoenix Contact FL SWITCH SMCS series products","id":"CVE-2021-21005"},"packages":[],"prev":{"headline":"Denial of Service Vulnerability in Phoenix Contact FL SWITCH SMCS series products","id":"CVE-2021-21003"},"products":["FL NAT","FL SWITCH"],"published":"2021-06-25","related":[{"cvss_score":7.5,"headline":"Race Condition Vulnerability in Phoenix Contact FL SWITCH SMCS series products","id":"CVE-2021-21005","kev_date_added":null,"published":"2021-06-25"},{"cvss_score":5.3,"headline":"Denial of Service Vulnerability in Phoenix Contact FL SWITCH SMCS series products","id":"CVE-2021-21003","kev_date_added":null,"published":"2021-06-25"}],"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":["Phoenix Contact"]},"summary":"Attackers can inject malicious code via LLDP frames into the web management interface, allowing execution in the client's browser.","url":"https://insights.sbomify.com/CVE-2021-21004/"}