Is CVE-2026-84484 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-84484?

CVE-2026-84484 has a CVSS v3 severity of HIGH (7.5).

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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.