CVE-2026-84484
ION-DTN before 4.2.0 Out-of-Bounds Read via decodeSdnv
CVSS 4.0 8.7 HIGHCVSS 3.1 7.5 HIGHCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-84484
PublishedION-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.
Read the publisher's advisoryAffected versions, risk and source history
Related advisories and sources
Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.
CVE-2026-84484 · CVE overview and exploitation status
cve-program · CVE-2026-84484
- https://github.com/nasa-jpl/ION-DTN/security/advisories/GHSA-85pw-28vw-2jf7
- https://github.com/nasa-jpl/ION-DTN/commit/d52d22bdd383798712357f86a2778757f740e812
- https://github.com/nasa-jpl/ION-DTN/releases/tag/ion-open-source-4.2.0
- https://github.com/nasa-jpl/ION-DTN/blob/ion-open-source-4.1.4/ici/library/platform.c#L1982
- https://github.com/nasa-jpl/ION-DTN/blob/ion-open-source-4.1.4/ici/library/ion.c#L1693
- https://github.com/nasa-jpl/ION-DTN
- https://www.vulncheck.com/advisories/ion-dtn-before-4.2.0-out-of-bounds-read-via-decodesdnv
Related changes
Linked by CVE identifierNo related changes are available here.