CVE-2025-35003Network attack vector

Code execution via unchecked Bluetooth packet lengths

Published May 26, 2025 · Updated Feb 26, 2026

Buffer overflows in the Bluetooth stack in Apache NuttX allow remote attackers to crash the system or execute code via crafted packets. The HCI core fails to validate H4 header and data lengths against its I/O buffer and confuses buffer types when a command response is missing, while the UART driver accepts ACL lengths beyond its receive buffer. The Bluetooth HCI or UART stack must be enabled and receive the malicious packet; the affected range begins at 7.25 and ends before 12.9.0.

CVSS severity9.8
Critical
EPSS probability1.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflows in the Bluetooth stack in Apache NuttX allow remote attackers to crash the system or execute code via crafted packets. The HCI core fails to validate H4 header and data lengths against its I/O buffer and confuses buffer types when a command response is missing, while the UART driver accepts ACL lengths beyond its receive buffer. The Bluetooth HCI or UART stack must be enabled and receive the malicious packet; the affected range begins at 7.25 and ends before 12.9.0.

The record

CVE
CVE-2025-35003
Published
May 26, 2025
Updated
Feb 26, 2026
Vendor
The Apache Software Foundation
Product
Apache NuttX
Classifications
CWE-119, CWE-121
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record 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=7.25 <12.9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache NuttXversion=7.25 <12.9.0

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-121Stack-based Buffer Overflow

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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