{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-1221 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2025-1221 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-1221 is a medium-severity denial of service vulnerability in silabs.com Zigbee, published on 30 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-1221 and fix it if it is affected.\n\nWhat it is: CVE-2025-1221 is a medium-severity denial of service vulnerability in silabs.com Zigbee, published on 30 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-1221 in the wild and no public exploit code.\n\nAffected product: silabs.com Zigbee. 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-2025-1221/ (Markdown: https://insights.sbomify.com/CVE-2025-1221/index.md)","id":"CVE-2025-1221","markdown":"https://insights.sbomify.com/CVE-2025-1221/index.md","name":"CVE-2025-1221","record":{"aliases":["GHSA-542q-g93g-wjg9"],"analysis":{"component_type":"iot_embedded","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Zigbee radio coprocessor","requires_auth":"low_privilege","summary":"Heavy Zigbee traffic causes a denial of service in SiLabs EmberZNet radio coprocessors, requiring a hard reset to recover.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Silabs","cpe":[],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-667","name":"Improper Locking"}],"description":"A Zigbee Radio Co-Processor (RCP), which is using SiLabs EmberZNet Zigbee stack, was unable to send messages to the host system (CPCd) due to heavy Zigbee traffic, resulting in a Denial of Service (DoS) attack, Only hard reset will bring the device to normal operation","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"DoS in Zigbee device due to heavy traffic","id":"CVE-2025-1221","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":0,"n_references":4,"next":{"headline":"An attacker can gain application privileges in order to perform limited modification and/or read arbitrary data","id":"CVE-2025-1222"},"packages":[],"prev":{"headline":"Null byte termination in hostnames","id":"CVE-2025-1220"},"products":["Zigbee"],"published":"2025-07-30","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-07-30","vendors":["silabs.com"]},"summary":"Heavy Zigbee traffic causes a denial of service in SiLabs EmberZNet radio coprocessors, requiring a hard reset to recover.","url":"https://insights.sbomify.com/CVE-2025-1221/"}