CVE-2026-75584 (GCVE-0-2026-75584)
Vulnerability from cvelistv5 – Published: 2026-09-10 13:54 – Updated: 2026-09-18 17:23 X_Open Source
VLAI
EPSS
VEX
Title
ION-DTN < 4.2.1-a.1 Denial of Service via canonicalizePayloadBlock() Assertion
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 17:11 UTC
CWE
- CWE-617 - Reachable Assertion
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/nasa-jpl/ION-DTN/security/advi… | vendor-advisory |
| https://www.vulncheck.com/advisories/ion-dtn-a-1-… | third-party-advisory |
Impacted products
Date Public
2026-09-08 00:00
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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