CVE-2025-55079: Eclipse Foundation ThreadX · Unthrottled Resource Allocation
Affects Eclipse Foundation ThreadXSource CVE Database V5
Not known to be exploited · CVSS 5.7 Medium.
Data as of 26 Oct 2026, 06:26 UTC
- 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:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 15 Oct 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 2026-10-26.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Eclipse Foundation ThreadX | Affected
| Fixed in– |
AI-suggested
1. Upgrade all affected ThreadX instances to version 6.4.3 or later where the vulnerability is fixed. 2. Implement strict access controls to limit local access to devices running ThreadX, reducing the risk of exploitation by unauthorized users. 3. Monitor embedded and IoT devices for abnormal thread behavior or resource exhaustion symptoms indicative of exploitation attempts. 4. Apply network segmentation and isolation for critical embedded systems to contain potential attacks. 5. Conduct regular audits of device firmware versions and patch status to ensure compliance. 6. Collaborate with device manufacturers and vendors to obtain security updates and guidance. 7. Employ runtime monitoring tools capable of detecting anomalous thread priority changes or scheduling disruptions. 8. Develop incident response plans tailored to embedded system outages to minimize operational impact. 9. Educate staff managing embedded and IoT infrastructure about the risks and signs of exploitation related to thread priority vulnerabilities.
Description
In Eclipse ThreadX before version 6.4.3, the thread module has a setting of maximum priority. In some cases the check of that maximum priority wasn't performed, allowing, as a result, to obtain a thread with higher priority than expected and causing a possible denial of service.