{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2020-5686 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-5686 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-5686 is a high-severity authentication bypass vulnerability in NEC Corporation UNIVERGE SV9500/SV8500 series, published on 13 Jan 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-2020-5686 and fix it if it is affected.\n\nWhat it is: CVE-2020-5686 is a high-severity authentication bypass vulnerability in NEC Corporation UNIVERGE SV9500/SV8500 series, published on 13 Jan 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-2020-5686 in the wild and no public exploit code.\n\nAffected product: NEC Corporation UNIVERGE SV9500/SV8500 series. 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-2020-5686/ (Markdown: https://insights.sbomify.com/CVE-2020-5686/index.md)","id":"CVE-2020-5686","markdown":"https://insights.sbomify.com/CVE-2020-5686/index.md","name":"CVE-2020-5686","record":{"aliases":["GHSA-gq7j-hx55-h62p"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"NEC UNIVERGE PBX","requires_auth":"none","summary":"An attacker can bypass authentication to access remote maintenance features and obtain sensitive information from NEC UNIVERGE PBX systems.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jpcert","cpe":[{"product":"univerge_sv8500_firmware","vendor":"nec"},{"product":"univerge_sv9500_firmware","vendor":"nec"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"Incorrect implementation of authentication algorithm issue in UNIVERGE SV9500 series from V1 to V7and SV8500 series from S6 to S8 allows an attacker to access the remote system maintenance feature and obtain the information by sending a specially crafted request to a specific URL.","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 UNIVERGE SV9500/SV8500 series","id":"CVE-2020-5686","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2020"},"n_packages":0,"n_references":2,"next":{"headline":"Path traversal in MikroTik WinBox","id":"CVE-2020-5720"},"packages":[],"prev":{"headline":"Command injection in UNIVERGE SV9500/SV8500 series","id":"CVE-2020-5685"},"products":["UNIVERGE SV9500/SV8500 series"],"published":"2021-01-13","related":[{"cvss_score":9.8,"headline":"Command injection in UNIVERGE SV9500/SV8500 series","id":"CVE-2020-5685","kev_date_added":null,"published":"2021-01-13"}],"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":"2024-08-04","vendors":["NEC Corporation"]},"summary":"An attacker can bypass authentication to access remote maintenance features and obtain sensitive information from NEC UNIVERGE PBX systems.","url":"https://insights.sbomify.com/CVE-2020-5686/"}