CVE-2026-42805

Firmware crash via unchecked debug frame length

Published Sep 10, 2026 · Updated Sep 10, 2026

Stack-based buffer overflow in Bosch Sensortec BHI385 SensorAPI 1.1.0 through 2.1.0 allows attackers to crash host firmware. bhi385_parse_debug_message trusts callback_info->data_ptr[0] as a copy length and passes it to memcpy for a 17-byte stack buffer without limiting the payload to 16 bytes. A malicious or compromised sensor or bus participant can supply an oversized FIFO debug frame, causing a firmware crash or adjacent-stack corruption that enables arbitrary code execution.

CVSS severity8.4
High
EPSS probability0.14%
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 overflow in Bosch Sensortec BHI385 SensorAPI 1.1.0 through 2.1.0 allows attackers to crash host firmware. bhi385_parse_debug_message trusts callback_info->data_ptr[0] as a copy length and passes it to memcpy for a 17-byte stack buffer without limiting the payload to 16 bytes. A malicious or compromised sensor or bus participant can supply an oversized FIFO debug frame, causing a firmware crash or adjacent-stack corruption that enables arbitrary code execution.

The record

CVE
CVE-2026-42805
Published
Sep 10, 2026
Updated
Sep 10, 2026
Vendor
Bosch Sensortec GmbH
Product
BHI385 SensorAPI
Classifications
CWE-121, T1200
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 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=1.1.0 <=2.1.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Bosch Sensortec GmbH · BHI385 SensorAPIversion=1.1.0 <=2.1.0

Published CVSS scores

8.4Bosch PSIRTCVSS:3.1/AV:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1200Hardware Additions

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