Arista NetworksCVE-2026-73436
Arista Networks EOS: out-of-bounds read
Medium6.0CVE-2026-73436 · Published Sep 16, 2026
On affected platforms running Arista EOS with OSPFv2 and OSPFv2 segment routing configured, a specially crafted OSPFv2 packet from an adjacent OSPF neighbor may cause OSPF to restart unexpectedly.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| EOS Product | >= 4.36.0F, <= 4.36.1F | No fix yet |
| >= 4.35.0F, <= 4.35.5M | No fix yet | |
| >= 4.34.0F, <= 4.34.7.1M | No fix yet | |
| >= 4.33.0F, <= 4.33.9M | No fix yet |
Details and references
More Arista Networks advisories
All Arista Networks| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 16 | Arista Networks EOS: remote code execution | Critical9.2 | No fix yet |
| Sep 16 | Arista Networks EOS: secrets in logs | Medium6.0 | No fix yet |
| Sep 16 | Arista Networks EOS: out-of-bounds read | High7.1 | No fix yet |
| Sep 16 | Arista Networks EOS: secrets in logs | Low2.1 | No fix yet |
| Sep 16 | Arista Networks EOS: denial of service | Medium5.3 | No fix yet |
| Sep 16 | Arista Networks VeloCloud Edge: missing authentication | High8.7 | 5.2.0.0+3 more |