Is there a public exploit for CVE-2026-102721?

No public exploit for CVE-2026-102721 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-102721?

CVE-2026-102721 scores CVSS 6.9 (v4.0), rated medium. EPSS puts the chance of exploitation in the next 30 days at 0.25%.

What does CVE-2026-102721 affect?

CVE-2026-102721 affects Eclipse Foundation Eclipse ThreadX NetX Duo.

6.9 Medium

In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603a, the TFTP client copies the message of a received ERROR packet without…

CVE-2026-102721

In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603a, the TFTP client copies the message of a received ERROR packet without bounding the copy by the end of the datagram, and the TFTP server reads one byte past a minimal ERROR packet. A malicious TFTP server can make the client copy up to 64 bytes of adjacent packet-pool memory into the error string the application retrieves, or fault on targets with memory protection.

Assessment

CVSS: 6.9 (v4.0)
Severity: Medium
EPSS: 0.25% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 29 September 2026
Last updated: 4 November 2026
Affected: Eclipse Foundation · Eclipse ThreadX NetX Duo
Assigner: eclipse

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-wvc9-5m9h-rvxc

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