{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-28510 exists.","fix":"No fix has been published for CVE-2021-28510 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-28510 is a medium-severity denial of service vulnerability in Arista Networks EOS, published on 24 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-28510 and fix it if it is affected.\n\nWhat it is: CVE-2021-28510 is a medium-severity denial of service vulnerability in Arista Networks EOS, published on 24 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-28510 exists.\n\nAffected product: Arista Networks EOS. 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-2021-28510/ (Markdown: https://insights.sbomify.com/CVE-2021-28510/index.md)","id":"CVE-2021-28510","markdown":"https://insights.sbomify.com/CVE-2021-28510/index.md","name":"CVE-2021-28510","record":{"aliases":["GHSA-c5c5-rwc6-67m5"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Arista EOS","requires_auth":"none","summary":"An attacker can cause a denial of service on Arista EOS devices by sending malformed PTP packets that trigger repeated PTP agent restarts.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Arista","cpe":[{"product":"eos","vendor":"arista"}],"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-1284","name":"Improper Validation of Specified Quantity in Input"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"For certain systems running EOS, a Precision Time Protocol (PTP) packet of a management/signaling message with an invalid Type-Length-Value (TLV) causes the PTP agent to restart. Repeated restarts of the service will make the service unavailable.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"Denial of service in EOS","id":"CVE-2021-28510","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Security feature bypass in EOS","id":"CVE-2021-28511"},"packages":[],"prev":{"headline":"TerminAttr streams MACsec sensitive data in clear text to other authorized users in CVP","id":"CVE-2021-28509"},"products":["EOS"],"published":"2023-01-24","related":[{"cvss_score":6.9,"headline":"Arista Extensible Operating System Incomplete Comparison with Missing Factors","id":"CVE-2026-7473","kev_date_added":"2026-06-09","published":"2026-06-05"},{"cvss_score":10,"headline":"Privilege escalation in n/a","id":"CVE-2015-8236","kev_date_added":null,"published":"2015-11-19"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2020-10188","kev_date_added":null,"published":"2020-03-06"},{"cvss_score":9.8,"headline":"Use after free in n/a","id":"CVE-2017-18017","kev_date_added":null,"published":"2018-01-03"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2017-14491","kev_date_added":null,"published":"2017-10-02"},{"cvss_score":9.3,"headline":"Privilege escalation in Arista EOS","id":"CVE-2023-24509","kev_date_added":null,"published":"2023-04-13"},{"cvss_score":9.3,"headline":"Information disclosure in n/a","id":"CVE-2015-5165","kev_date_added":null,"published":"2015-08-12"}],"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-04-01","vendors":["Arista Networks"]},"summary":"An attacker can cause a denial of service on Arista EOS devices by sending malformed PTP packets that trigger repeated PTP agent restarts.","url":"https://insights.sbomify.com/CVE-2021-28510/"}