mDNS string-cache lookup matches on slot size, so a peer name aliases a shorter one and the response encoder writes past the packet

published 2026-09-29 last mo. modified 2026-11-04 5d ago also EUVD-2026-89178

cvss: 7.1; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 24%
public exploits: 0; none known

In Eclipse ThreadX NetX Duo versions up to and including 6.5.2.202603, the mDNS add-on's string cache accepts a shorter name as a match for a longer stored one. A host on the local link can send two mDNS records that make a device performing continuous service discovery write up to three bytes past its transmit packet, corrupting a neighbouring packet or the pool's free list, and misattribute discovered records.

Patch / fix

fixed in 1

Eclipse Foundation Eclipse ThreadX NetX Duo 6.5.2.202603a

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CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: last mo. (2026-09-29)

Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	4.0	7.1	CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
CNA	4.0	7.1	CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

Eclipse Foundation Eclipse ThreadX NetX Duo

Classification

Weakness

CWE-787 Out-of-bounds Write
CWE-697 Incorrect Comparison

References

github.com /eclipse-threadx/netxduo/security/advisories/GHSA-2gf7-5224-5vrj

Sources

CVE List CVE-2026-102715
NVD CVE-2026-102715

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CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

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