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CVE-2026-73455

Security Advisory 0173

CVSS 3.1 7.5 HIGHCVSS 4.0 8.9 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-73455

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-73455

Published

EOS

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Arista Networks",
                    "product": "EOS",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "1.0.0",
                            "lessThan": "4.33.0F",
                            "status": "affected",
                            "versionType": "custom"
                        },
                        {
                            "version": "4.33.0F",
                            "lessThanOrEqual": "4.33.8M",
                            "status": "affected",
                            "versionType": "custom"
                        },
                        {
                            "version": "4.34.0F",
                            "lessThanOrEqual": "4.34.6M",
                            "status": "affected",
                            "versionType": "custom"
                        },
                        {
                            "version": "4.35.0F",
                            "lessThanOrEqual": "4.35.4M",
                            "status": "affected",
                            "versionType": "custom"
                        },
                        {
                            "version": "4.36.0F",
                            "lessThanOrEqual": "4.36.0.1F",
                            "status": "affected",
                            "versionType": "custom"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON