{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-20343 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-20343 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-20343 is a high-severity missing authorization vulnerability in Cisco Secure Firewall Management Center (FMC), published on 16 Sep 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-2026-20343 and fix it if it is affected.\n\nWhat it is: CVE-2026-20343 is a high-severity missing authorization vulnerability in Cisco Secure Firewall Management Center (FMC), published on 16 Sep 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-2026-20343 in the wild and no public exploit code.\n\nAffected product: Cisco Secure Firewall Management Center (FMC). 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-2026-20343/ (Markdown: https://insights.sbomify.com/CVE-2026-20343/index.md)","id":"CVE-2026-20343","markdown":"https://insights.sbomify.com/CVE-2026-20343/index.md","name":"CVE-2026-20343","record":{"aliases":["GHSA-mxj5-v55g-6rm4"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["data_read","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Cisco Secure Firewall Management Center","requires_auth":"none","summary":"Unauthenticated remote attackers can download sensitive files and exhaust disk space on Cisco Secure Firewall Management Center devices, causing denial of service.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"A vulnerability in a critical API for Cisco Secure FMC Software could allow an unauthenticated, remote attacker to download sensitive files and use unbounded disk space.\r\n\r\nThis vulnerability exists because a critical API lacks authentication.\u0026nbsp;An attacker could exploit this vulnerability by repeatedly invoking the API. A successful exploit could allow the attacker to download sensitive files that should be restricted and consume disk space so the device could become unresponsive, causing a DoS condition.","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":"Cisco Secure Firewall Management Center Software Information Disclosure and Disk Denial of Service Vulnerability","id":"CVE-2026-20343","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Cisco Secure Firewall Management Center Software SQL Injection Vulnerability","id":"CVE-2026-20344"},"packages":[],"prev":{"headline":"Cisco Secure Firewall Management Center Software Low Privileged Arbitrary File Download Vulnerability","id":"CVE-2026-20342"},"products":["Cisco Secure Firewall Management Center (FMC)"],"published":"2026-09-16","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":"partial"},"state":"PUBLISHED","updated":"2026-09-18","vendors":["Cisco"]},"summary":"Unauthenticated remote attackers can download sensitive files and exhaust disk space on Cisco Secure Firewall Management Center devices, causing denial of service.","url":"https://insights.sbomify.com/CVE-2026-20343/"}