CVE-2026-76505

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The issue can result in an NP reset, causing traffic loss on the affected line card while it recovers. Under repeated reset conditions, the network processor may enter a persistent shutdown state, in which case an explicit line card reload may be required to restore traffic.\r\nThe vulnerability is within the IPv4 packet-processing path. Transit IPv4 traffic does not trigger this issue and IPv6 traffic cannot trigger it."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "cwe", "cweId": "CWE-20", "description": "Improper Input Validation"}]}], "providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2026-10-21T16:18:12.195Z"}}}, "cveMetadata": {"cveId": "CVE-2026-76505", "state": "PUBLISHED", "dateUpdated": "2026-10-22T13:37:51.885Z", "dateReserved": "2026-08-19T12:02:03.641Z", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "datePublished": "2026-10-21T16:18:12.195Z", "assignerShortName": "cisco"}, "dataVersion": "5.2"}

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{}

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"affected", "versions": {"scheme": "semver", "value": "24.3.30"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Cisco IOS XR Software", "source": "cna", "vendor": "Cisco"}, "product": "ios_xr_software", "vendor": "cisco"}], "created": "2026-10-21T21:15:16.422283+00:00", "updated": "2026-10-22T12:00:07.224133+00:00", "vendors": ["cisco", "cisco$PRODUCT$ios_xr_software"]}