CVE-2026-44634

Application interruption via unchecked BLE data copies

Published Jun 9, 2026 · Updated Jun 10, 2026

Stack-based buffer overflows in SimpleBLE before 0.14.0 allow remote attackers to interrupt applications via crafted BLE advertisements. SimpleCBLE's service and manufacturer-data accessors copy attacker-controlled lengths into fixed-size stack buffers, while Dongl's Protocol::simpleble_write accepts data beyond its 512-byte command field. The advertisement paths require only BLE radio range, with no pairing, connection, privileges, or user interaction; the published impact is limited to application availability.

CVSS severity8.7
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stack-based buffer overflows in SimpleBLE before 0.14.0 allow remote attackers to interrupt applications via crafted BLE advertisements. SimpleCBLE's service and manufacturer-data accessors copy attacker-controlled lengths into fixed-size stack buffers, while Dongl's Protocol::simpleble_write accepts data beyond its 512-byte command field. The advertisement paths require only BLE radio range, with no pairing, connection, privileges, or user interaction; the published impact is limited to application availability.

The record

CVE
CVE-2026-44634
Published
Jun 9, 2026
Updated
Jun 10, 2026
Vendor
The California Open Source Company
Product
SimpleBLE
Classifications
CWE-787, CWE-121, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 0.14.0

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The California Open Source Company · SimpleBLEversion=< 0.14.0

Published CVSS scores

8.7GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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.

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

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-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo