High 7.5Published Sep 1, 2026

CVE-2026-84484ION-DTN before 4.2.0 Out-of-Bounds Read via decodeSdnv

Updated under an hour ago (Oct 28, 2026, 3:23 AM ET)

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It affects nasa-jpl ION-DTN. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for nasa-jpl ION-DTN

Exploited in the last 30 days

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: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-125
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Sep 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

nasa-jpl ION-DTN nasa_jpl:ion_dtn (from the name)	before 4.2.0	CNA record

References

References

https://github.com/nasa-jpl/ION-DTN/security/advisories/GHSA-85pw-28vw-2jf7	vendor-advisory
https://github.com/nasa-jpl/ION-DTN/commit/d52d22bdd383798712357f86a2778757f740e812	patch
https://github.com/nasa-jpl/ION-DTN/releases/tag/ion-open-source-4.2.0	release-notes
https://github.com/nasa-jpl/ION-DTN/blob/ion-open-source-4.1.4/ici/library/platform.c#L1982	technical-description
https://github.com/nasa-jpl/ION-DTN/blob/ion-open-source-4.1.4/ici/library/ion.c#L1693	technical-description
https://github.com/nasa-jpl/ION-DTN	product
https://www.vulncheck.com/advisories/ion-dtn-before-4.2.0-out-of-bounds-read-via-decodesdnv	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.