{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-5268 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-5268 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-5268 is a critical authentication bypass vulnerability in CIENA 6500 S-Series, published on 6 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-5268 and fix it if it is affected.\n\nWhat it is: CVE-2026-5268 is a critical authentication bypass vulnerability in CIENA 6500 S-Series, published on 6 Jul 2026. 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-2026-5268 in the wild and no public exploit code.\n\nAffected product: CIENA 6500 S-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-2026-5268/ (Markdown: https://insights.sbomify.com/CVE-2026-5268/index.md)","id":"CVE-2026-5268","markdown":"https://insights.sbomify.com/CVE-2026-5268/index.md","name":"CVE-2026-5268","record":{"aliases":["GHSA-m6c7-7xhp-6vhc"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Ciena network equipment","requires_auth":"none","summary":"Remote attackers can bypass SFTP authentication to read or modify system files on Ciena network devices.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Ciena","cpe":[],"cvss":{"score":9.1,"severity":"critical","source":"cisa-adp","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-288","name":"Authentication Bypass Using an Alternate Path or Channel"}],"description":"An authentication bypass vulnerability exists in\nthe default SFTP server component utilized across the Ciena products listed. This vulnerability allows a remote, unauthenticated attacker to bypass\nsecurity controls and gain unauthorized access to the underlying filesystem.\nSuccessful exploitation could allow an attacker to read or modify system files.","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":"SFTP Server Authentication Weakness","id":"CVE-2026-5268","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Navigator NCS and MCP System Accounts with Default Passwords","id":"CVE-2026-5269"},"packages":[],"prev":{"headline":"Unauthenticated Event Stream Exposure of Session Tokens in Navigator NCS","id":"CVE-2026-5267"},"products":["6500 S-Series","6500 T-Series","CPL","PTS"],"published":"2026-07-06","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-07-08","vendors":["CIENA"]},"summary":"Remote attackers can bypass SFTP authentication to read or modify system files on Ciena network devices.","url":"https://insights.sbomify.com/CVE-2026-5268/"}