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  4. CVE 2026 102728 out of bounds reads in netx secure client side
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Back to active CVEs
Medium · CVSS 6.3CVE-2026-102728

Out-of-bounds reads in NetX Secure client-side handshake parsing (ServerHello and HelloVerifyRequest)CVE-2026-102728

Answer in brief

CVE-2026-102728 records a Medium severity (CVSS 6.3) vulnerability in Out-of-bounds reads in NetX Secure client-side handshake parsing (ServerHello and HelloVerifyRequest). The current sources do not mark it as known exploited. The current feed maps Eclipse Foundation/Eclipse ThreadX NetX Duo (generic), Eclipse Foundation/NetX Duo (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 29, 2026Updated Nov 4, 2026Source checked Nov 4, 2026First seen by HOL Sep 29, 2026Material review Nov 4, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.3
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 6.3. 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.

Affected scope and exposure questions

The current feed maps Eclipse Foundation/Eclipse ThreadX NetX Duo (generic), Eclipse Foundation/NetX Duo (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Eclipse Foundation/Eclipse ThreadX NetX Duogeneric>=6.0 <=6.5.2.202603aNot reported
Eclipse Foundation/NetX Duogeneric>=0 <=6.5.1.202602Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Eclipse Foundation/Eclipse ThreadX NetX Duo, Eclipse Foundation/NetX Duo.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Sep 29, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 29, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
Upstream source description

In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603a, the NetX Secure TLS client's ServerHello parser and DTLS client's HelloVerifyRequest parser read fields before checking that the message is long enough to contain them. A malicious server or an on-path attacker can make the client read up to three bytes past a handshake message, which can fault the client on targets with memory protection.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-126
Source
CVE List V5
Source checked
Nov 4, 2026
References
1 linked source
Open source record