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.
Published: 2026-09-02
Score: 8.7 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Fri, 04 Sep 2026 03:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 03 Sep 2026 16:15:00 +0000

Type Values Removed Values Added
First Time appeared Nasajpl
Nasajpl iondtn
Vendors & Products Nasajpl
Nasajpl iondtn

Wed, 02 Sep 2026 01:45:00 +0000

Type Values Removed Values Added
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.
Title ION-DTN before 4.2.0 Out-of-Bounds Read via decodeSdnv
Weaknesses CWE-125
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-04T02:22:08.836Z

Reserved: 2026-09-01T20:37:00.841Z

Link: CVE-2026-84484

cve-icon Vulnrichment

Updated: 2026-09-04T02:22:03.582Z

cve-icon NVD

Status : Received

Published: 2026-09-02T02:17:20.450

Modified: 2026-09-04T03:17:44.733

Link: CVE-2026-84484

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-03T16:00:07Z

Weaknesses