Module object allocation size overflow corrupts the manager object pool

published 2026-10-20 20 d ago modified 2026-10-20 19 d ago also EUVD-2026-105151

cvss: 7.0; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 4%
public exploits: 0; none known

A ThreadX module chooses `object_size` when it calls `txm_module_object_allocate`. The Module Manager adds its own 16-byte private header to that size and asked the object pool for the result **without checking the addition**. A size near the top of a `ULONG` wrapped, the pool served a block far smaller than the header, and the manager then wrote the header past the end of it and into the neighbouring byte-pool block.

Patch / fix

fixed in 1

Eclipse Foundation Eclipse ThreadX 6.5.2.202603

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 19 d ago (2026-10-20)

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	7.0	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N
CNA	4.0	7.0	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/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

Classification

Weakness

CWE-190 Integer Overflow or Wraparound
CWE-680 Integer Overflow to Buffer Overflow
CWE-787 Out-of-bounds Write

References

github.com /eclipse-threadx/threadx/security/advisories/GHSA-63qc-jcr6-qw6r

Sources

CVE List CVE-2026-95107
NVD CVE-2026-95107

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary