{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-20177 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-20177 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-20177 is a medium-severity denial of service vulnerability in Cisco Industrial Ethernet Switches, published on 19 Aug 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-2026-20177 and fix it if it is affected.\n\nWhat it is: CVE-2026-20177 is a medium-severity denial of service vulnerability in Cisco Industrial Ethernet Switches, published on 19 Aug 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-2026-20177 in the wild and no public exploit code.\n\nAffected product: Cisco Industrial Ethernet Switches. 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-2026-20177/ (Markdown: https://insights.sbomify.com/CVE-2026-20177/index.md)","id":"CVE-2026-20177","markdown":"https://insights.sbomify.com/CVE-2026-20177/index.md","name":"CVE-2026-20177","record":{"aliases":["GHSA-rvq7-6xgp-76jg"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Industrial Ethernet Switch","requires_auth":"none","summary":"Remote unauthenticated attackers can cause a denial of service on management interfaces by flooding the device with high-rate traffic.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"A vulnerability in the handling of management plane packets by Cisco Industrial Ethernet (IE) 1000 Series Switches could allow an unauthenticated, remote attacker to\u0026nbsp;cause the device manager, SSH, or API to become inaccessible.This vulnerability is due to insufficient protection against management plane flooding attacks. An attacker could exploit this vulnerability by sending a high rate of ICMP, SSH, or HTTP traffic to an affected device. A successful exploit could allow the attacker to cause the CPU of the device to increase, resulting in a denial of service (DoS) condition on the device manager web GUI, SSH, or API. Data traffic through the device 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 Industrial Ethernet 1000 Series Switches Denial of Service Vulnerability","id":"CVE-2026-20177","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":"Open redirect in Cisco Webex App","id":"CVE-2026-20178"},"packages":[],"prev":{"headline":"Cisco Identity Services Engine Remote Code Execution Vulnerability","id":"CVE-2026-20176"},"products":["Cisco Industrial Ethernet Switches"],"published":"2026-08-19","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":"2026-08-20","vendors":["Cisco"]},"summary":"Remote unauthenticated attackers can cause a denial of service on management interfaces by flooding the device with high-rate traffic.","url":"https://insights.sbomify.com/CVE-2026-20177/"}