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CVE-2025-55080· NVD / CVE Program· CNA eclipse

Improper Parameter Check in ThreadX Syscall Implementation

In Eclipse ThreadX before 6.4.3, when memory protection is enabled, syscall parameters verification wasn't enough, allowing an attacker to obtain an arbitrary memory read/write.

HighCVSS 7.2 · v4.0—No exploit Fix available
Published
Oct 15, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 3th percentile
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Report tools

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Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.2 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · eclipse
7.2
NVD has not scored this yet; the score shown is the CNA’s.

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
eclipsethreadx

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • eclipse threadxbefore 6.4.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (eclipse). Independent of NVD's CPE analysis and usually ahead of it.

  • Eclipse Foundation ThreadX

    • before 6.4.3affected · semver

Same product

eclipse: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-2214Missing array size check in _Mtxinit() in the Xtensa port
    31Monitor
  • CVE-2024-2212Integer wraparounds, under-allocations, and heap buffer overflows in Eclipse ThreadX xQueueCreate() and xQueueCreateSet()
    31Monitor
  • CVE-2026-0648The vulnerability stems from an incorrect error-checking logic in the CreateCounter() function (in threadx/utility/rtos_compatibility_layers
    25Monitor
  • CVE-2025-55079Missing check for thread priority
    22Monitor
  • CVE-2025-55078Incomplete validation of kernel object pointers in system calls
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Eclipse Foundation ThreadX6.4.3Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-550781 days apartIncomplete validation of kernel object pointers in system calls
    22Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-233 · Improper Handling of Parameters

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Change log

  1. Fix✗ → ✓

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References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records