CVE-2026-75584: high-severity vulnerability in nasa-jpl ION-DTN
ION-DTN < 4.2.1-a.1 Denial of Service via canonicalizePayloadBlock() Assertion
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.6%
ION-DTN before 4.2.1-a.1 contains a denial of service vulnerability that allows unauthenticated remote attackers to crash the ION process by sending a BPv7 bundle with a zero-length payload. The canonicalizePayloadBlock() function in bpsec_util.c passes bundle->payload.length to zco_clone() without validating it against zero, causing a failed CHKZERO assertion that triggers sm_Abort() and terminates the process with SIGABRT before any HMAC verification occurs, requiring no valid key or credential to exploit.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
nasa-jpl · ION-DTNRelated CVEs — nasa-jpl ION-DTN
In the same product, most dangerous first.
CVE-2026-84484HIGHION-DTN before 4.2.0 Out-of-Bounds Read via decodeSdnvEPSS 0.9%CVE-2024-54129CRITICALImproper Initialization of `imc` Scheme Leading to `SIGABRT` in ION-DTN BPv7EPSS 0.4%CVE-2024-54130CRITICALSegmentation Fault in `forwardBundle` Function of ION-DTN BPv7 When Destination EID is `dtn:none` (public)EPSS 0.4%CVE-2025-61910HIGHNASA ION-DTN BPv7 4.1.3s Uncontrolled Memory Allocation that leads to Denial-of-ServiceEPSS 0.4%