{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-20295 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-20295 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-20295 is a high-severity denial of service 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-2026-20295 and fix it if it is affected.\n\nWhat it is: CVE-2026-20295 is a high-severity denial of service 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-2026-20295 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-2026-20295/ (Markdown: https://insights.sbomify.com/CVE-2026-20295/index.md)","id":"CVE-2026-20295","markdown":"https://insights.sbomify.com/CVE-2026-20295/index.md","name":"CVE-2026-20295","record":{"aliases":["GHSA-2x4m-98h8-xp8g"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Cisco firewall software","requires_auth":"none","summary":"Unauthenticated remote attackers can cause denial of service by exhausting memory via crafted sftunnel TLS frames in Cisco Secure Firewall Management Center and Threat Defense.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-789","name":"Memory Allocation with Excessive Size Value"}],"description":"A vulnerability in the sftunnel inter-device communication protocol of Cisco Secure FMC Software and Cisco Secure FTD Software could allow an unauthenticated, remote attacker to exhaust the available memory of an affected device.\r\n\r\nThis vulnerability is due to improper management of memory resources during sftunnel TLS connection setup. An attacker could exploit this vulnerability by sending crafted sftunnel TLS frames to an affected device\u0026nbsp;during the connection setup. A successful exploit could allow the attacker to exhaust the available memory on the affected device, which could result in 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":"Denial of service in Cisco Secure Firewall Management Center (FMC)","id":"CVE-2026-20295","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"SPL Command Safeguards Bypass through Cross-Site Request Forgery (CSRF) in Deployment Server in Splunk Enterprise","id":"CVE-2026-20296"},"packages":[],"prev":{"headline":"Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability","id":"CVE-2026-20294"},"products":["Cisco Secure Firewall Management Center (FMC)","Cisco Secure Firewall Threat Defense (FTD) Software"],"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":"2026-09-17","vendors":["Cisco"]},"summary":"Unauthenticated remote attackers can cause denial of service by exhausting memory via crafted sftunnel TLS frames in Cisco Secure Firewall Management Center and Threat Defense.","url":"https://insights.sbomify.com/CVE-2026-20295/"}