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CVE-2026-84484— ION-DTN before 4.2.0 Out-of-Bounds Read via decodeSdnv

Quick assessment

Affected
nasa-jpl ION-DTN
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

NASA Jet Propulsion Laboratory NASA/JPL Interplanetary Overlay Network是美国NASA Jet Propulsion Laboratory政府部门的一款深空通信场景下的星际覆盖网络协议软件。 NASA Jet Propulsion Laboratory NASA/JPL Interplanetary Overlay Network 4.2.0之前版本存在缓冲区错误漏洞，该漏洞源于decodeSdnv函数存在越界读取问题，可能允许未经身份验

CVSS 7.5 · High EPSS 0.87% · P58

Possible ATT&CK Techniques 1 AI

T1210 · Exploitation of Remote Services

Affected Version Matrix 1

VendorProduct Version RangeStatus
nasa-jpl ION-DTN < 4.2.0 affected
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I. Basic Information for CVE-2026-84484

Vulnerability Information
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Vulnerability Title
ION-DTN before 4.2.0 Out-of-Bounds Read via decodeSdnv
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
NASA Jet Propulsion Laboratory NASA/JPL Interplanetary Overlay Network 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NASA Jet Propulsion Laboratory NASA/JPL Interplanetary Overlay Network是美国NASA Jet Propulsion Laboratory政府部门的一款深空通信场景下的星际覆盖网络协议软件。 NASA Jet Propulsion Laboratory NASA/JPL Interplanetary Overlay Network 4.2.0之前版本存在缓冲区错误漏洞，该漏洞源于decodeSdnv函数存在越界读取问题，可能允许未经身份验
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nasa-jpl ION-DTN 0 ~ 4.2.0 -

II. Public POCs for CVE-2026-84484

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III. Intelligence Information for CVE-2026-84484

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Patches & Fixes for CVE-2026-84484 (1)

Vendor Advisories for CVE-2026-84484 (2)

Proof of Concept for CVE-2026-84484 (1)

Vendor Pages for CVE-2026-84484 (1)

IV. Related Vulnerabilities

Same product: ION-DTN
Same vendor: nasa-jpl
Same weakness: CWE-125

V. Comments for CVE-2026-84484

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