{"answers":{"affected":"It affects 114 products.","exploited":"There is no known exploitation of CVE-2020-3496 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-3496 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-3496 is a medium-severity denial of service vulnerability in Cisco Small Business 250 Series Smart Switches Software, published on 26 Aug 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-3496 and fix it if it is affected.\n\nWhat it is: CVE-2020-3496 is a medium-severity denial of service vulnerability in Cisco Small Business 250 Series Smart Switches Software, published on 26 Aug 2020. 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-2020-3496 in the wild and no public exploit code.\n\nAffected product: Cisco Small Business 250 Series Smart Switches Software. 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-2020-3496/ (Markdown: https://insights.sbomify.com/CVE-2020-3496/index.md)","id":"CVE-2020-3496","markdown":"https://insights.sbomify.com/CVE-2020-3496/index.md","name":"CVE-2020-3496","record":{"aliases":["GHSA-p3jf-mcx6-q3cr"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Cisco Small Business Switch","requires_auth":"none","summary":"Unauthenticated remote attackers can cause a denial of service on Cisco Small Business switches by sending crafted IPv6 packets, requiring vendor patches.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"sf200-24_firmware","vendor":"cisco"},{"product":"sf200-24fp_firmware","vendor":"cisco"},{"product":"sf200-24p_firmware","vendor":"cisco"},{"product":"sf200-48_firmware","vendor":"cisco"},{"product":"sf200-48p_firmware","vendor":"cisco"},{"product":"sf250-24_firmware","vendor":"cisco"},{"product":"sf250-24p_firmware","vendor":"cisco"},{"product":"sf250-48_firmware","vendor":"cisco"},{"product":"sf250-48hp_firmware","vendor":"cisco"},{"product":"sf300-08_firmware","vendor":"cisco"},{"product":"sf300-24_firmware","vendor":"cisco"},{"product":"sf300-24mp_firmware","vendor":"cisco"},{"product":"sf300-24p_firmware","vendor":"cisco"},{"product":"sf300-24pp_firmware","vendor":"cisco"},{"product":"sf300-48_firmware","vendor":"cisco"},{"product":"sf300-48p_firmware","vendor":"cisco"},{"product":"sf300-48pp_firmware","vendor":"cisco"},{"product":"sf302-08_firmware","vendor":"cisco"},{"product":"sf302-08mp_firmware","vendor":"cisco"},{"product":"sf302-08mpp_firmware","vendor":"cisco"},{"product":"sf302-08p_firmware","vendor":"cisco"},{"product":"sf302-08pp_firmware","vendor":"cisco"},{"product":"sf350-48_firmware","vendor":"cisco"},{"product":"sf350-48mp_firmware","vendor":"cisco"},{"product":"sf350-48p_firmware","vendor":"cisco"},{"product":"sf500-24_firmware","vendor":"cisco"},{"product":"sf500-24p_firmware","vendor":"cisco"},{"product":"sf500-48_firmware","vendor":"cisco"},{"product":"sf500-48p_firmware","vendor":"cisco"},{"product":"sf550x-24_firmware","vendor":"cisco"},{"product":"sf550x-24mp_firmware","vendor":"cisco"},{"product":"sf550x-24p_firmware","vendor":"cisco"},{"product":"sf550x-48_firmware","vendor":"cisco"},{"product":"sf550x-48mp_firmware","vendor":"cisco"},{"product":"sf550x-48p_firmware","vendor":"cisco"},{"product":"sg200-08_firmware","vendor":"cisco"},{"product":"sg200-08p_firmware","vendor":"cisco"},{"product":"sg200-10fp_firmware","vendor":"cisco"},{"product":"sg200-18_firmware","vendor":"cisco"},{"product":"sg200-26_firmware","vendor":"cisco"},{"product":"sg200-26fp_firmware","vendor":"cisco"},{"product":"sg200-26p_firmware","vendor":"cisco"},{"product":"sg200-50_firmware","vendor":"cisco"},{"product":"sg200-50fp_firmware","vendor":"cisco"},{"product":"sg200-50p_firmware","vendor":"cisco"},{"product":"sg250-08_firmware","vendor":"cisco"},{"product":"sg250-08hp_firmware","vendor":"cisco"},{"product":"sg250-10p_firmware","vendor":"cisco"},{"product":"sg250-18_firmware","vendor":"cisco"},{"product":"sg250-26_firmware","vendor":"cisco"},{"product":"sg250-26hp_firmware","vendor":"cisco"},{"product":"sg250-26p_firmware","vendor":"cisco"},{"product":"sg250-50_firmware","vendor":"cisco"},{"product":"sg250-50hp_firmware","vendor":"cisco"},{"product":"sg250-50p_firmware","vendor":"cisco"},{"product":"sg250x-24_firmware","vendor":"cisco"},{"product":"sg250x-24p_firmware","vendor":"cisco"},{"product":"sg250x-48_firmware","vendor":"cisco"},{"product":"sg250x-48p_firmware","vendor":"cisco"},{"product":"sg300-10_firmware","vendor":"cisco"},{"product":"sg300-10mp_firmware","vendor":"cisco"},{"product":"sg300-10mpp_firmware","vendor":"cisco"},{"product":"sg300-10p_firmware","vendor":"cisco"},{"product":"sg300-10pp_firmware","vendor":"cisco"},{"product":"sg300-10sfp_firmware","vendor":"cisco"},{"product":"sg300-20_firmware","vendor":"cisco"},{"product":"sg300-28_firmware","vendor":"cisco"},{"product":"sg300-28mp_firmware","vendor":"cisco"},{"product":"sg300-28p_firmware","vendor":"cisco"},{"product":"sg300-28pp_firmware","vendor":"cisco"},{"product":"sg300-52_firmware","vendor":"cisco"},{"product":"sg300-52mp_firmware","vendor":"cisco"},{"product":"sg300-52p_firmware","vendor":"cisco"},{"product":"sg350-10_firmware","vendor":"cisco"},{"product":"sg350-10mp_firmware","vendor":"cisco"},{"product":"sg350-10p_firmware","vendor":"cisco"},{"product":"sg350-28_firmware","vendor":"cisco"},{"product":"sg350-28mp_firmware","vendor":"cisco"},{"product":"sg350-28p_firmware","vendor":"cisco"},{"product":"sg350x-24_firmware","vendor":"cisco"},{"product":"sg350x-24mp_firmware","vendor":"cisco"},{"product":"sg350x-24p_firmware","vendor":"cisco"},{"product":"sg350x-48_firmware","vendor":"cisco"},{"product":"sg350x-48mp_firmware","vendor":"cisco"},{"product":"sg350x-48p_firmware","vendor":"cisco"},{"product":"sg350xg-24f_firmware","vendor":"cisco"},{"product":"sg350xg-24t_firmware","vendor":"cisco"},{"product":"sg350xg-2f10_firmware","vendor":"cisco"},{"product":"sg350xg-48t_firmware","vendor":"cisco"},{"product":"sg355-10p_firmware","vendor":"cisco"},{"product":"sg500-28_firmware","vendor":"cisco"},{"product":"sg500-28mpp_firmware","vendor":"cisco"},{"product":"sg500-28p_firmware","vendor":"cisco"},{"product":"sg500-52_firmware","vendor":"cisco"},{"product":"sg500-52mp_firmware","vendor":"cisco"},{"product":"sg500-52p_firmware","vendor":"cisco"},{"product":"sg500x-24_firmware","vendor":"cisco"},{"product":"sg500x-24p_firmware","vendor":"cisco"},{"product":"sg500x-48_firmware","vendor":"cisco"},{"product":"sg500x-48p_firmware","vendor":"cisco"},{"product":"sg500xg-8f8t_firmware","vendor":"cisco"},{"product":"sg550x-24_firmware","vendor":"cisco"},{"product":"sg550x-24mp_firmware","vendor":"cisco"},{"product":"sg550x-24mpp_firmware","vendor":"cisco"},{"product":"sg550x-24p_firmware","vendor":"cisco"},{"product":"sg550x-48_firmware","vendor":"cisco"},{"product":"sg550x-48mp_firmware","vendor":"cisco"},{"product":"sg550x-48p_firmware","vendor":"cisco"},{"product":"sx550x-12f_firmware","vendor":"cisco"},{"product":"sx550x-16ft_firmware","vendor":"cisco"},{"product":"sx550x-24_firmware","vendor":"cisco"},{"product":"sx550x-24f_firmware","vendor":"cisco"},{"product":"sx550x-24ft_firmware","vendor":"cisco"},{"product":"sx550x-52_firmware","vendor":"cisco"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.0"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"A vulnerability in the IPv6 packet processing engine of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient validation of incoming IPv6 traffic. An attacker could exploit this vulnerability by sending a crafted IPv6 packet through an affected device. A successful exploit could allow the attacker to cause the switch management CLI to stop responding, resulting in a DoS condition. This vulnerability is specific to IPv6 traffic. IPv4 traffic is not affected.","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 Small Business Smart and Managed Switches Denial of Service Vulnerability","id":"CVE-2020-3496","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service Vulnerabilities","id":"CVE-2020-3497"},"packages":[],"prev":{"headline":"Cisco Jabber for Windows Message Handling Arbitrary Code Execution Vulnerability","id":"CVE-2020-3495"},"products":["Cisco Small Business 250 Series Smart Switches Software"],"published":"2020-08-26","related":[{"cvss_score":9.8,"headline":"Cisco Small Business Switches Privileged Access Vulnerability","id":"CVE-2018-15439","kev_date_added":null,"published":"2018-11-08"},{"cvss_score":8.6,"headline":"Cisco Small Business Smart and Managed Switches Denial of Service Vulnerability","id":"CVE-2020-3363","kev_date_added":null,"published":"2020-08-17"},{"cvss_score":8.1,"headline":"Cisco Small Business Smart and Managed Switches Session Management Vulnerability","id":"CVE-2020-3297","kev_date_added":null,"published":"2020-07-02"},{"cvss_score":8.1,"headline":"Cisco Small Business Smart and Managed Switches Cross-Site Request Forgery Vulnerability","id":"CVE-2019-12636","kev_date_added":null,"published":"2019-10-16"},{"cvss_score":7.5,"headline":"Cisco Small Business Switches Information Disclosure Vulnerability","id":"CVE-2019-15993","kev_date_added":null,"published":"2020-09-23"},{"cvss_score":7.2,"headline":"Cisco Small Business Switches Secure Shell Certificate Authentication Bypass Vulnerability","id":"CVE-2019-1859","kev_date_added":null,"published":"2019-05-03"},{"cvss_score":6.1,"headline":"Cisco Small Business Smart and Managed Switches Cross-Site Scripting Vulnerability","id":"CVE-2019-12718","kev_date_added":null,"published":"2019-10-16"}],"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-11-13","vendors":["Cisco"]},"summary":"Unauthenticated remote attackers can cause a denial of service on Cisco Small Business switches by sending crafted IPv6 packets, requiring vendor patches.","url":"https://insights.sbomify.com/CVE-2020-3496/"}