CVE-2026-73455— Security Advisory 0173
Quick assessment
Affected
Arista Networks EOS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
On affected platforms running Arista EOS with Open Shortest Path First version 3 (OSPFv3) configured, a specially crafted packet can cause the OSPFv3 agent to restart unexpectedly.
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I. Basic Information for CVE-2026-73455
Vulnerability Information
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Vulnerability Title
Security Advisory 0173
Source: CVE Program / CVE List V5
Vulnerability Description
On affected platforms running Arista EOS with Open Shortest Path First version 3 (OSPFv3) configured, a specially crafted packet can cause the OSPFv3 agent to restart unexpectedly.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
长度参数不一致性处理不恰当
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Arista Networks | EOS | 1.0.0 ~ 4.33.0F | - |
|
II. Public POCs for CVE-2026-73455
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-73455 (1)
-
Security Advisory 0173 - Arista vendor-advisory
Same Patch Batch · Arista Networks · 2026-09-16 · 23 CVEs total
| CVE-2026-73453 | 10.0 CRITICAL | Security Advisory 0174 |
| CVE-2026-86106 | 9.6 CRITICAL | Security Advisory 0179 |
| CVE-2026-73447 | 9.1 CRITICAL | Security Advisory 0162 - gNSI Certz/Bootz OS Command Injection via Crafted Rotate Request |
| CVE-2026-73464 | 8.8 HIGH | Security Advisory 0166 |
| CVE-2026-73435 | 8.2 HIGH | Security Advisory 0171 |
| CVE-2026-73454 | 8.1 HIGH | Security Advisory 0165 |
| CVE-2026-86108 | 8.0 HIGH | Security Advisory 0181 |
| CVE-2026-73461 | 8.0 HIGH | Security Advisory 0163 |
| CVE-2026-73439 | 7.5 HIGH | Security Advisory 0164 |
| CVE-2026-2380 | 7.4 HIGH | Security Advisory 0168 |
| CVE-2026-73450 | 6.9 MEDIUM | Security Advisory 0161 |
| CVE-2026-86109 | 6.6 MEDIUM | Security Advisory 0182 |
| CVE-2026-77190 | 6.5 MEDIUM | Security Advisory 0177 |
| CVE-2026-73436 | 6.5 MEDIUM | Security Advisory 0171 |
| CVE-2026-73468 | 6.5 MEDIUM | Security Advisory 0175 |
| CVE-2026-86107 | 5.9 MEDIUM | Security Advisory 0180 |
| CVE-2026-73469 | 5.8 MEDIUM | Security Advisory 0176 |
| CVE-2026-73438 | 5.3 MEDIUM | Security Advisory 0172 |
| CVE-2026-73463 | 5.3 MEDIUM | Security Advisory 0169 |
| CVE-2026-73445 | 4.9 MEDIUM | Security Advisory 0167 |
Showing top 20 of 23 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-73455
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