VulnerabilityPublished 17 Oct 2025

CVE-2025-55097: Eclipse Foundation USBX · Out-of-bounds Read

Affects Eclipse Foundation USBXSource CVE Database V5

Not known to be exploited · CVSS 2.4 Low.

Data as of 26 Oct 2026, 12:29 UTC

CVSS 4.0 base score

2.4Low

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.2% chance of exploitation in 30 days – higher than 18% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Physical
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: None
Vulnerable system confidentiality: None
Vulnerable system integrity: None
Vulnerable system availability: Low
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Physical: The attack requires the attacker to physically touch or manipulate the vulnerable system. Physical interaction may be brief (e.g., evil maid attack) or persistent.
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system integrity: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the Vulnerable System are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 17 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 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Eclipse Foundation USBX	Affected =0	Fixed in–

AI-suggested

Upgrade USBX to version 6.4.3 or later as soon as the patch becomes available to eliminate the out-of-bounds read vulnerability.
Implement strict USB device control policies to restrict connection of unauthorized USB devices, especially in sensitive environments.
Employ hardware-based USB port lockdown or disable unused USB ports on embedded devices to reduce physical attack vectors.
Conduct regular security audits and firmware integrity checks on embedded systems running ThreadX to detect unauthorized modifications.
Use device whitelisting and endpoint security solutions tailored for embedded and IoT environments to monitor USB device interactions.
Educate operational technology (OT) personnel about the risks of connecting untrusted USB devices to critical systems.
Collaborate with device vendors to ensure timely firmware updates and security patches are applied.
Consider network segmentation and monitoring to isolate embedded devices and detect anomalous behavior resulting from exploitation attempts.

Description

In USBX before 6.4.3, the USB support module for Eclipse Foundation ThreadX, there was a potential out of bound read issue in _ux_host_class_audio_streaming_sampling_get() when parsing a descriptor of an USB streaming device.

Impact

For European organizations, the impact of CVE-2025-55097 is generally low but context-dependent. Embedded systems and IoT devices running ThreadX with USBX are prevalent in sectors such as automotive manufacturing, industrial automation, and healthcare equipment. An attacker with physical access could exploit this vulnerability by connecting a malicious USB audio device, potentially causing device crashes or limited information disclosure. This could disrupt critical operations or leak sensitive data in safety-critical environments. While the vulnerability does not allow remote exploitation or privilege escalation, the physical access requirement limits the attack surface. However, in environments with many connected embedded devices, such as factories or hospitals, the risk of insider threats or supply chain attacks increases. European organizations with stringent safety and compliance requirements must consider this vulnerability as part of their embedded device security posture. Failure to address it could lead to operational downtime or minor data leaks, impacting business continuity and regulatory compliance.

CWE-125Out-of-bounds Read (opens in a new tab)
Base weaknessCWE Top 25 (2025): #8
The product reads data past the end, or before the beginning, of the intended buffer.
Implementation · Input Validation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
Architecture and Design · Language Selection
Use a language that provides appropriate memory abstractions.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
Attack patterns
Overread Buffers (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

github.com/eclipse-threadx/usbx/security/advisories/GHSA-r6h5-fmhc-v3j7 (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 17 Oct 2025, 06:02 UTC

WeaknessesCWE-125

Technical details

References

Community reviews

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