{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-20343 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2025-20343 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-20343 is a high-severity denial of service vulnerability in Cisco Identity Services Engine, published on 5 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-20343 and fix it if it is affected.\n\nWhat it is: CVE-2025-20343 is a high-severity denial of service vulnerability in Cisco Identity Services Engine, published on 5 Nov 2025. 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-2025-20343 in the wild and no public exploit code.\n\nAffected product: Cisco Identity Services Engine. 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-2025-20343/ (Markdown: https://insights.sbomify.com/CVE-2025-20343/index.md)","id":"CVE-2025-20343","markdown":"https://insights.sbomify.com/CVE-2025-20343/index.md","name":"CVE-2025-20343","record":{"aliases":["GHSA-cfwq-p5hw-9v6p"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Cisco Identity Services Engine","requires_auth":"none","summary":"An unauthenticated remote attacker can cause a denial of service by sending crafted RADIUS requests to Cisco ISE when a specific suppression setting is enabled.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"identity_services_engine","vendor":"cisco"}],"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-697","name":"Incorrect Comparison"}],"description":"A vulnerability in the RADIUS setting Reject RADIUS requests from clients with repeated failures on Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause Cisco ISE to restart unexpectedly.\r\n\r\nThis vulnerability is due to a logic error when processing a RADIUS access request for a MAC address that is already a rejected endpoint. An attacker could exploit this vulnerability by sending a specific sequence of multiple crafted RADIUS access request messages to Cisco ISE. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when Cisco ISE restarts.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2025-11-08","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2025-11-08T17:37:02Z","kind":"github_poc","ref":"https://github.com/fevar54/Blackash-CVE-2025-20343","stars":0,"title":"PoC y analisis de CVE-2025-20343: DoS remoto no autenticado en Cisco ISE via paquetes RADIUS."}],"tier":"poc_unverified"},"has_fix":null,"headline":"Cisco Identity Services Engine Radius Suppression Denial of Service Vulnerability","id":"CVE-2025-20343","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"cisco:identity_services_engine","products":["cisco:identity_services_engine"],"type":"denial_of_service","year":"2025"},"n_packages":0,"n_references":1,"next":{"headline":"Cisco Nexus Dashboard Path Traversal Vulnerability","id":"CVE-2025-20344"},"packages":[],"prev":{"headline":"Cisco Integrated Management Controller Virtual Keyboard Video Monitor (vKVM) Stored Cross-Site Scripting Vulnerability","id":"CVE-2025-20342"},"products":["Cisco Identity Services Engine Software"],"published":"2025-11-05","related":[{"cvss_score":10,"headline":"Cisco Identity Services Engine Incorrect Use of Privileged APIs","id":"CVE-2026-76460","kev_date_added":"2026-09-16","published":"2026-09-16"},{"cvss_score":10,"headline":"Cisco Identity Services Engine Injection","id":"CVE-2025-20337","kev_date_added":"2025-07-28","published":"2025-07-16"},{"cvss_score":10,"headline":"Cisco Identity Services Engine Injection","id":"CVE-2025-20281","kev_date_added":"2025-07-28","published":"2025-06-25"},{"cvss_score":10,"headline":"Cisco Identity Services Engine Hardening Release - Improper Neutralization Vulnerabilities","id":"CVE-2026-20130","kev_date_added":null,"published":"2026-09-16"},{"cvss_score":10,"headline":"Cisco Identity Services Engine Hardening Release - Access Control Vulnerabilities","id":"CVE-2026-20192","kev_date_added":null,"published":"2026-09-16"},{"cvss_score":10,"headline":"Cisco ISE API Unauthenticated Remote Code Execution Vulnerability","id":"CVE-2025-20282","kev_date_added":null,"published":"2025-06-25"},{"cvss_score":10,"headline":"Hardcoded credentials in n/a","id":"CVE-2011-3290","kev_date_added":null,"published":"2011-09-21"}],"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-11-05","vendors":["Cisco"]},"summary":"An unauthenticated remote attacker can cause a denial of service by sending crafted RADIUS requests to Cisco ISE when a specific suppression setting is enabled.","url":"https://insights.sbomify.com/CVE-2025-20343/"}