Status: NEW | Advisory ID: CVE-2026-73458
| CVE | CVE-2026-73458 |
| CVSS Score / Version | 8.2 (High) / CVSS v3.1 |
| Updated | 2026-09-16 |
| CVSS Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H |
| CVSS Prose | attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is none; integrity impact is low; availability impact is high. |
| Classified as | CWE-303 (Incorrect Implementation of Authentication Algorithm) |
On affected platforms running Arista EOS with authenticated Bidirectional Forwarding Detection (BFD) sessions configured, a specially crafted packet can cause the BFD session(s) to go down. This may result in undesirable network changes because various routing protocols monitor status on BFD session(s). (NVD)
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-73458 |
| CVE | https://www.cve.org/CVERecord?id=CVE-2026-73458 |