CVE-2026-84484
ION-DTN before 4.2.0 Out-of-Bounds Read via decodeSdnv
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-125 |
| Vendor | nasa-jpl |
| Product | ion-dtn |
| Published | Sep 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
nasa-jpl / ION-DTN
0 < 4.2.0
References
github.com: https://github.com/nasa-jpl/ION-DTN/security/advisories/GHSA-85pw-28vw-2jf7 github.com: https://github.com/nasa-jpl/ION-DTN/commit/d52d22bdd383798712357f86a2778757f740e812 github.com: https://github.com/nasa-jpl/ION-DTN/releases/tag/ion-open-source-4.2.0 github.com: https://github.com/nasa-jpl/ION-DTN/blob/ion-open-source-4.1.4/ici/library/platform.c#L1982 github.com: https://github.com/nasa-jpl/ION-DTN/blob/ion-open-source-4.1.4/ici/library/ion.c#L1693 github.com: https://github.com/nasa-jpl/ION-DTN vulncheck.com: https://www.vulncheck.com/advisories/ion-dtn-before-4.2.0-out-of-bounds-read-via-decodesdnv
Credits
🔍 Dilipkumar Choudhary