CVE-2025-8762Public exploit

Root access via exposed UART boot interruption

Published Aug 13, 2025 · Updated Aug 13, 2025

Improper physical access control in INSTAR 2K+ and 4K Cameras 3.11.1 Build 1124 allows physically proximate attackers to gain root access. An exposed UART header on the camera PCB accepts serial input during startup, and U-Boot permits interruption and unrestricted boot-argument changes. Physical access and a USB-to-UART adapter are required; adding init=/bin/sh and resuming boot bypasses authentication and starts a root shell.

CVSS severity6.8
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper physical access control in INSTAR 2K+ and 4K Cameras 3.11.1 Build 1124 allows physically proximate attackers to gain root access. An exposed UART header on the camera PCB accepts serial input during startup, and U-Boot permits interruption and unrestricted boot-argument changes. Physical access and a USB-to-UART adapter are required; adding init=/bin/sh and resuming boot bypasses authentication and starts a root shell.

The record

CVE
CVE-2025-8762
Published
Aug 13, 2025
Updated
Aug 13, 2025
Vendor
INSTAR Deutschland GmbH
Product
INSTAR 4K Cameras
Classifications
CWE-284, CWE-1263, T1059.004
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 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=3.11.1 Build 1124

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

INSTAR Deutschland GmbH · INSTAR 4K Camerasversion=3.11.1 Build 1124
INSTAR Deutschland GmbH · INSTAR 2K+ Camerasversion=3.11.1 Build 1124

Published CVSS scores

6.8VulDBCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.2VulDBCVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
7.2VulDBAV:L/AC:L/Au:N/C:C/I:C/A:C

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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-1263Improper Physical Access Control
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

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

Technologies

Your stack

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Your stack

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