CVE-2025-56438Public exploit

Root code execution via unauthenticated firmware update

Published Oct 24, 2025 · Updated Oct 24, 2025

Improper update authentication in Nous W3 Smart WiFi Camera 1.33.50.82 allows physically proximate attackers to execute code as root. At boot or update, the firmware executes update_config.sh from a crafted update.tar on a FAT32 SD card as root after bundle, version, and MD5 checks that do not establish package authenticity. Physical access to the SD-card slot is sufficient; no network access, authentication, or user interaction is required, enabling full device control and persistent configuration changes.

CVSS severity6.8
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper update authentication in Nous W3 Smart WiFi Camera 1.33.50.82 allows physically proximate attackers to execute code as root. At boot or update, the firmware executes update_config.sh from a crafted update.tar on a FAT32 SD card as root after bundle, version, and MD5 checks that do not establish package authenticity. Physical access to the SD-card slot is sufficient; no network access, authentication, or user interaction is required, enabling full device control and persistent configuration changes.

The record

CVE
CVE-2025-56438
Published
Oct 24, 2025
Updated
Oct 24, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-345, T1068
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 24, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8CISA-ADPCVSS:3.1/AV:P/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.

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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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-345Insufficient Verification of Data Authenticity
T1068Exploitation for Privilege Escalation

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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