Answer in brief
CVE-2026-75584 records a High severity (CVSS 8.7) vulnerability in ION-DTN < 4.2.1-a.1 Denial of Service via canonicalizePayloadBlock() Assertion. The current sources do not mark it as known exploited. The current feed maps nasa-jpl/ION-DTN (generic), nasa-jpl/ION-DTN (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps nasa-jpl/ION-DTN (generic), nasa-jpl/ION-DTN (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| nasa-jpl/ION-DTNgeneric | 0 | Not reported |
| nasa-jpl/ION-DTNgeneric | >=0 <=4.2.0 | Not reported |
Published upstream
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 10, 2026
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.
Quoted source text, attributed separately from HOL analysis.