{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-73463 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-73463 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-73463 is a medium-severity vulnerability in Arista Networks EOS, published on 16 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-73463 and fix it if it is affected.\n\nWhat it is: CVE-2026-73463 is a medium-severity vulnerability in Arista Networks EOS, published on 16 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-73463 in the wild and no public exploit code.\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-2026-73463/ (Markdown: https://insights.sbomify.com/CVE-2026-73463/index.md)","id":"CVE-2026-73463","markdown":"https://insights.sbomify.com/CVE-2026-73463/index.md","name":"CVE-2026-73463","record":{"aliases":["GHSA-v538-9xwx-vp3j"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Arista EOS","requires_auth":"low_privilege","summary":"A race condition in Arista EOS gNSI Authz allows revoked users to retain unauthorized gRPC access when multiple transports are configured.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Arista","cpe":[],"cvss":{"score":6,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-362","name":"Concurrent Execution using Shared Resource with Improper Synchronization"}],"description":"On affected platforms running Arista EOS, when multiple gRPC Network Security Interface (gNSI) transports are configured, a race condition in the gNSI Authz service may cause a policy rotation to fail silently. An authenticated user whose access was revoked by the new policy may retain unauthorized access to gRPC interfaces. This does not affect Bootz.\n\nThis issue was discovered internally by Arista, and the company is not aware of any malicious exploitation of this vulnerability in customer networks.","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":"Security Advisory 0169","id":"CVE-2026-73463","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"race_condition","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Security Advisory 0166","id":"CVE-2026-73464"},"packages":[],"prev":{"headline":"Denial of service in EOS","id":"CVE-2026-73462"},"products":["EOS"],"published":"2026-09-16","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":"2026-09-16","vendors":["Arista Networks"]},"summary":"A race condition in Arista EOS gNSI Authz allows revoked users to retain unauthorized gRPC access when multiple transports are configured.","url":"https://insights.sbomify.com/CVE-2026-73463/"}