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        "cveId": "CVE-2026-124001",
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        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-11-06T18:38:38.543Z",
        "datePublished": "2026-11-09T18:45:25.184Z",
        "dateUpdated": "2026-11-09T18:45:25.184Z"
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                "dateUpdated": "2026-11-09T18:45:25.184Z"
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            "title": "ION-DTN 2.2.1b-4.2.0 Integer Overflow Heap Corruption via DGR",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "NASA JPL ION-DTN 2.2.1b through 4.2.0 contains an integer overflow vulnerability in the Datagram Retransmission (DGR) convergence layer that allows attackers to corrupt heap memory by sending a maliciously crafted 64-bit svcDataLength value that wraps a 32-bit allocation size calculation. Attackers can exploit the dgr_receive API's unchecked memcpy operation using synthetic datagrams or DGR traffic over internal IPC or custom transports to trigger an out-of-bounds write, leading to denial of service or potential remote code execution."
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            "datePublic": "2026-11-06T00:00:00.000Z",
            "problemTypes": [
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                    "descriptions": [
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                            "lang": "en",
                            "description": "Integer Overflow or Wraparound",
                            "cweId": "CWE-190",
                            "type": "CWE"
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                            "lang": "en",
                            "description": "Out-of-bounds Write",
                            "cweId": "CWE-787",
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                        "subConfidentialityImpact": "NONE",
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                        "vulnAvailabilityImpact": "HIGH",
                        "subAvailabilityImpact": "NONE",
                        "exploitMaturity": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "valueDensity": "NOT_DEFINED",
                        "vulnerabilityResponseEffort": "NOT_DEFINED",
                        "providerUrgency": "NOT_DEFINED",
                        "version": "4.0",
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                        "baseScore": 9.2,
                        "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
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                        "scope": "UNCHANGED",
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                    "url": "https://github.com/nasa-jpl/ION-DTN/security/advisories/GHSA-rcqq-5qmv-7fxp",
                    "name": "GitHub Security Advisory (GHSA-rcqq-5qmv-7fxp)",
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                {
                    "url": "https://github.com/nasa-jpl/ION-DTN/releases/tag/ion-open-source-4.2.1-a.2",
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                {
                    "url": "https://www.vulncheck.com/advisories/ion-dtn-1b-integer-overflow-heap-corruption-via-dgr",
                    "name": "VulnCheck Advisory: ION-DTN 2.2.1b-4.2.0 Integer Overflow Heap Corruption via DGR",
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