{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-76505",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-76505",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-10-21T16:18:12.195Z",
    "updatedAt": "2026-10-22T13:37:51.885Z",
    "importedAt": "2026-10-24T01:58:30.346Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Cisco IOS XR Software for ASR 9000 Series Routers IPv4 Unicast Packets Denial of Service Vulnerability",
      "summary": "A vulnerability in the IPv4 packet processing functionality of Cisco IOS XR Software that affects Cisco ASR 9000 and 9900 Series Aggregation Services Routers as well as Cisco ASR 9902 and 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause network processor (NP) errors, resulting in a line card reset or shutdown and a denial of service (DoS) condition. \r\n\r\nThis vulnerability is due to the incorrect handling of crafted IPv4 packets that are received on an affected line card interface and processed as for-us traffic. 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.",
      "affected": [
        {
          "vendor": "Cisco",
          "product": "Cisco IOS XR Software",
          "defaultStatus": "unknown",
          "versions": [
            {
              "version": "7.0.1",
              "status": "affected"
            },
            {
              "version": "7.1.1",
              "status": "affected"
            },
            {
              "version": "7.0.90",
              "status": "affected"
            },
            {
              "version": "6.7.1",
              "status": "affected"
            },
            {
              "version": "7.0.2",
              "status": "affected"
            },
            {
              "version": "7.1.15",
              "status": "affected"
            },
            {
              "version": "7.1.2",
              "status": "affected"
            },
            {
              "version": "6.7.2",
              "status": "affected"
            },
            {
              "version": "7.1.25",
              "status": "affected"
            },
            {
              "version": "7.1.3",
              "status": "affected"
            },
            {
              "version": "6.7.3",
              "status": "affected"
            },
            {
              "version": "7.3.1",
              "status": "affected"
            },
            {
              "version": "7.4.1",
              "status": "affected"
            },
            {
              "version": "6.8.1",
              "status": "affected"
            },
            {
              "version": "7.3.2",
              "status": "affected"
            },
            {
              "version": "7.5.1",
              "status": "affected"
            },
            {
              "version": "7.6.1",
              "status": "affected"
            },
            {
              "version": "7.5.2",
              "status": "affected"
            },
            {
              "version": "7.3.3",
              "status": "affected"
            },
            {
              "version": "6.8.2",
              "status": "affected"
            },
            {
              "version": "7.7.1",
              "status": "affected"
            },
            {
              "version": "7.4.2",
              "status": "affected"
            },
            {
              "version": "7.3.4",
              "status": "affected"
            },
            {
              "version": "6.7.35",
              "status": "affected"
            },
            {
              "version": "6.9.1",
              "status": "affected"
            },
            {
              "version": "7.6.2",
              "status": "affected"
            },
            {
              "version": "7.8.1",
              "status": "affected"
            },
            {
              "version": "7.5.3",
              "status": "affected"
            },
            {
              "version": "7.7.2",
              "status": "affected"
            },
            {
              "version": "6.9.2",
              "status": "affected"
            },
            {
              "version": "7.9.1",
              "status": "affected"
            },
            {
              "version": "7.8.2",
              "status": "affected"
            },
            {
              "version": "7.5.4",
              "status": "affected"
            },
            {
              "version": "7.8.22",
              "status": "affected"
            },
            {
              "version": "7.10.1",
              "status": "affected"
            },
            {
              "version": "7.9.2",
              "status": "affected"
            },
            {
              "version": "7.3.5",
              "status": "affected"
            },
            {
              "version": "7.5.5",
              "status": "affected"
            },
            {
              "version": "7.11.1",
              "status": "affected"
            },
            {
              "version": "7.9.21",
              "status": "affected"
            },
            {
              "version": "7.10.2",
              "status": "affected"
            },
            {
              "version": "24.1.1",
              "status": "affected"
            },
            {
              "version": "7.11.2",
              "status": "affected"
            },
            {
              "version": "24.2.1",
              "status": "affected"
            },
            {
              "version": "24.1.2",
              "status": "affected"
            },
            {
              "version": "24.3.1",
              "status": "affected"
            },
            {
              "version": "24.4.1",
              "status": "affected"
            },
            {
              "version": "24.2.2",
              "status": "affected"
            },
            {
              "version": "7.8.23",
              "status": "affected"
            },
            {
              "version": "7.11.21",
              "status": "affected"
            },
            {
              "version": "24.3.2",
              "status": "affected"
            },
            {
              "version": "24.3.20",
              "status": "affected"
            },
            {
              "version": "24.3.30",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}