CVE-2025-55079

Denial of service via unchecked priority changes

Published Oct 15, 2025 · Updated Oct 15, 2025

Priority enforcement failure in Eclipse ThreadX before 6.4.3 allows local users to interrupt service through a module thread. The thread-priority-change and thread-preemption-change dispatch paths accept requested values without comparing module threads against txm_module_instance_maximum_priority. The gate is a low-privileged local module context, and the published impact is limited to loss of availability with no reported data exposure or modification.

CVSS severity5.7
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Priority enforcement failure in Eclipse ThreadX before 6.4.3 allows local users to interrupt service through a module thread. The thread-priority-change and thread-preemption-change dispatch paths accept requested values without comparing module threads against txm_module_instance_maximum_priority. The gate is a low-privileged local module context, and the published impact is limited to loss of availability with no reported data exposure or modification.

The record

CVE
CVE-2025-55079
Published
Oct 15, 2025
Updated
Oct 15, 2025
Vendor
The Eclipse Foundation
Product
Eclipse ThreadX
Classifications
CWE-770, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <6.4.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Eclipse Foundation · Eclipse ThreadXversion=0 <6.4.3

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.7Eclipse FoundationCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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