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VulnerabilityPublished Updated

CVE-2026-102758: Eclipse Foundation NetX Duo · Buffer Over-read

Affects Eclipse Foundation NetX DuoSource CVE Database V5

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Not known to be exploited · CVSS 7.5 High.

Data as of 12 Nov 2026, 23:24 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Eclipse FoundationNetX DuoAffected
  • <=6.5.1.202602
Fixed in–
GitHubeclipse-threadx/netxduopkg:github/eclipse-threadx/netxduoOther threatsAffected
  • <=6.5.1.202602
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until a patch is available, users should monitor vendor communications for updates.

Description

CVE-2026-102758 is a buffer over-read vulnerability in the Eclipse Foundation NetX Duo library's function _nx_secure_x509_asn1_tlv_block_parse(). This function reads an ASN.1 tag byte from a buffer before verifying the buffer length, potentially reading one byte beyond the buffer when the remaining length is zero. The vulnerability affects X.509 certificate parsing during TLS handshakes. The issue can cause an out-of-bounds read but does not impact confidentiality or integrity, only availability. The affected versions are from 0 up to and including 6.5.1.202602.

References

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