CVE-2026-84484

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.

Affected Platforms

Weakness Type

CWE-125

References

• https://github.com/nasa-jpl/ION-DTN
• https://github.com/nasa-jpl/ION-DTN/blob/ion-open-source-4.1.4/ici/library/ion.c…
• https://github.com/nasa-jpl/ION-DTN/blob/ion-open-source-4.1.4/ici/library/platf…
• https://github.com/nasa-jpl/ION-DTN/commit/d52d22bdd383798712357f86a2778757f740e…
• https://github.com/nasa-jpl/ION-DTN/releases/tag/ion-open-source-4.2.0
• https://github.com/nasa-jpl/ION-DTN/security/advisories/GHSA-85pw-28vw-2jf7