CVE-2025-10457

Service interruption via unsolicited BLE response acceptance

Published Sep 19, 2025 · Updated Sep 19, 2025

Improper BLE response validation in Zephyr RTOS before 4.2.0 allows physically proximate attackers to interrupt service. The le_conn_rsp handler accepts an unsolicited response when its identifier matches, without verifying that the device sent a corresponding request. Unauthenticated BLE proximity is sufficient; the vendor reports protocol state confusion, memory corruption, and denial of service as consequences.

CVSS severity4.3
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper BLE response validation in Zephyr RTOS before 4.2.0 allows physically proximate attackers to interrupt service. The le_conn_rsp handler accepts an unsolicited response when its identifier matches, without verifying that the device sent a corresponding request. Unauthenticated BLE proximity is sufficient; the vendor reports protocol state confusion, memory corruption, and denial of service as consequences.

The record

CVE
CVE-2025-10457
Published
Sep 19, 2025
Updated
Sep 19, 2025
Vendor
Zephyr Project
Product
Zephyr RTOS
Classifications
CWE-358, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 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=* <=4.1.0

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Zephyr Project · Zephyr RTOSversion=* <=4.1.0

Published CVSS scores

4.3Zephyr ProjectCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-358Improperly Implemented Security Check for Standard
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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