CVE-2025-55087Network attack vector

Device crashes via unchecked SNMPv3 security parameter parsing

Published Oct 17, 2025 · Updated Oct 17, 2025

Out-of-bounds read in Eclipse ThreadX NetX Duo before 6.4.4 allows remote attackers to crash devices through crafted SNMPv3 requests. In nxd_snmp.c, _nx_snmp_version_3_process reads buffer_ptr[0] and buffer_ptr[1] without first ensuring that buffer_length is at least two. The SNMP add-on must be present and reachable, and a malformed or truncated request can cause a crash, memory corruption, or other system instability.

CVSS severity6.3
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Eclipse ThreadX NetX Duo before 6.4.4 allows remote attackers to crash devices through crafted SNMPv3 requests. In nxd_snmp.c, _nx_snmp_version_3_process reads buffer_ptr[0] and buffer_ptr[1] without first ensuring that buffer_length is at least two. The SNMP add-on must be present and reachable, and a malformed or truncated request can cause a crash, memory corruption, or other system instability.

The record

CVE
CVE-2025-55087
Published
Oct 17, 2025
Updated
Oct 17, 2025
Vendor
The Eclipse Foundation
Product
Eclipse ThreadX NetX Duo
Classifications
CWE-1285, CWE-125, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <6.4.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Eclipse Foundation · Eclipse ThreadX NetX Duoversion=0 <6.4.4

Published CVSS scores

6.3Eclipse FoundationCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1285Improper Validation of Specified Index, Position, or Offset in Input
CWE-125Out-of-bounds Read
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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