CVE-2026-84484
ION-DTN before 4.2.0 Out-of-Bounds Read via decodeSdnv
- State
- Published
- Severity
- 8.7 High
- Published
- Sep 2, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 1, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
ION-DTNnasa-jpl |
|
References
- GitHub Security Advisory (GHSA-85pw-28vw-2jf7)vendor-advisory
- Patch Commitpatch
- ION-DTN ion-open-source-4.2.0 Release Notesrelease-notes
- https://github.com/nasa-jpl/ION-DTN/blob/ion-open-source-4.1.4/ici/library/platform.c#L1982technical-description
- https://github.com/nasa-jpl/ION-DTN/blob/ion-open-source-4.1.4/ici/library/ion.c#L1693technical-description
- https://github.com/nasa-jpl/ION-DTNproduct
- VulnCheck Advisory: ION-DTN before 4.2.0 Out-of-Bounds Read via decodeSdnvthird-party-advisory
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.