CVE-2026-33801

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The rpd crash occurs before the update can be readvertised, so there is no downstream propagation.\n\n\nThis issue affects:\n\n\n\n * Junos OS versions 25.2 before 25.2R2;\n\n\n * Junos OS Evolved versions 25.2 before 25.2R2-EVO.\n\n\n\n\nThis issue doesn't affect Junos OS versions before 25.2R1 nor Junos OS Evolved versions before 25.2R1-EVO.", "supportingMedia": [{"type": "text/html", "value": "An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker sending a specific BGP update over an established BGP session to cause a Denial-of-Service (DoS).<br><br><p>Upon receipt of a specifically malformed non-inet/inet6 unicast BGP update, an RPD crash and restart is triggered, which will cause a complete service outage until routing has reconverged. The rpd crash occurs before the update can be readvertised, so there is no downstream propagation.</p><p><br>This issue affects:</p><p></p><ul><li>Junos OS versions 25.2 before 25.2R2;</li></ul><ul><li>Junos OS Evolved versions 25.2 before 25.2R2-EVO.</li></ul><p></p><p>This issue doesn't affect Junos OS versions before 25.2R1 nor Junos OS Evolved versions before 25.2R1-EVO.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-754", "description": "CWE-754 Improper Check for Unusual or Exceptional Conditions"}]}], "providerMetadata": {"orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper", "dateUpdated": "2026-07-09T21:03:24.796Z"}}}, "cveMetadata": {"cveId": "CVE-2026-33801", "state": "PUBLISHED", "dateUpdated": "2026-07-10T13:31:03.248Z", "dateReserved": "2026-03-23T19:46:13.673Z", "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "datePublished": "2026-07-09T21:03:24.796Z", "assignerShortName": "juniper"}, "dataVersion": "5.2"}

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