{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "d52d22bdd383798712357f86a2778757f740e812"
            },
            {
              "fixed": "568df887cb9f18aa8ec013b1a566d83215e499ae"
            }
          ],
          "repo": "https://github.com/nasa-jpl/ion-dtn",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-85pw-28vw-2jf7"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84484.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "4.2.0"
          }
        ],
        "source": "AFFECTED_FIELD"
      },
      {
        "extracted_events": [
          {
            "fixed": "4.2.0"
          }
        ],
        "source": "DESCRIPTION"
      }
    ]
  },
  "details": "ION-DTN versions before 4.2.0 contain an out-of-bounds read vulnerability in the decodeSdnv function that allows unauthenticated remote attackers to read memory by sending truncated SDNV values. Attackers can send a UDP datagram to the LTP link service input port with a truncated SDNV to trigger reads up to nine bytes past buffer boundaries and underflow byte counters.",
  "id": "CVE-2026-84484",
  "modified": "2026-09-05T03:31:01.166000408Z",
  "published": "2026-09-02T01:18:14.970Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84484.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nasa-jpl/ION-DTN/releases/tag/ion-open-source-4.2.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nasa-jpl/ION-DTN/security/advisories/GHSA-85pw-28vw-2jf7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84484"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/ion-dtn-before-4.2.0-out-of-bounds-read-via-decodesdnv"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nasa-jpl/ION-DTN/commit/d52d22bdd383798712357f86a2778757f740e812"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/nasa-jpl/ION-DTN"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/nasa-jpl/ION-DTN/blob/ion-open-source-4.1.4/ici/library/ion.c#L1693"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/nasa-jpl/ION-DTN/blob/ion-open-source-4.1.4/ici/library/platform.c#L1982"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "ION-DTN before 4.2.0 Out-of-Bounds Read via decodeSdnv"
}