CVE-2026-84484
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductION-DTN
PublishedSep 2, 2026
First seenSep 2, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- nasa-jpl ION-DTN4.2.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nasa-jpl ION-DTN | v < 4.2.0 | 4.2.0 |
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