Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
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
- https://www.vulncheck.com/advisories/ion-dtn-before-4.2.0-out-of-bounds-read-via
- https://github.com/nasa-jpl/ION-DTN/security/advisories/GHSA-85pw-28vw-2jf7
FAQ
What is CVE-2026-84484?
CVE-2026-84484 is a vulnerability with a CVSS score of 7.5 (HIGH). 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. Attac...
How severe is CVE-2026-84484?
CVE-2026-84484 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-84484?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.