CVE-2026-75584ION-DTN < 4.2.1-a.1 Denial of Service via canonicalizePayloadBlock() Assertion
Updated under an hour ago ()
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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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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
- 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-617
- 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 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
nasa-jpl ION-DTN nasa_jpl:ion_dtn (from the name) | through 4.2.0; 4.2.1-a.1 not affected | CNA record |
References
- https://github.com/nasa-jpl/ION-DTN/security/advisories/GHSA-9vgc-2r6g-6qwfvendor-advisory
- https://www.vulncheck.com/advisories/ion-dtn-a-1-denial-of-service-via-canonicalizepayloadblock-assertionthird-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.