CVE-2025-1424Public exploit

Root access via SUID developer-mode file write

Published Mar 4, 2025 · Updated Mar 4, 2025

Privilege escalation in PocketBook InkPad Color 3 U743k3.6.8.3671 allows physically proximate attackers to obtain root access. The sreader-owned SUID iv2sh utility lets locally executed code write /mnt/secure/developer_mode, and the USB init script treats that file's presence as authorization to start Dropbear with root privileges. Exploitation requires physical access to copy and manually launch an application on the e-reader; after a reboot, the attacker can connect to the root SSH service over USB tethering.

CVSS severity8.6
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in PocketBook InkPad Color 3 U743k3.6.8.3671 allows physically proximate attackers to obtain root access. The sreader-owned SUID iv2sh utility lets locally executed code write /mnt/secure/developer_mode, and the USB init script treats that file's presence as authorization to start Dropbear with root privileges. Exploitation requires physical access to copy and manually launch an application on the e-reader; after a reboot, the attacker can connect to the root SSH service over USB tethering.

The record

CVE
CVE-2025-1424
Published
Mar 4, 2025
Updated
Mar 4, 2025
Vendor
PocketBook International
Product
PocketBook InkPad Color 3
Classifications
CWE-269, CAPEC-233, T1548.001
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 4, 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=U743k3.6.8.3671

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

PocketBook International · PocketBook InkPad Color 3version=U743k3.6.8.3671

Published CVSS scores

8.6Switzerland Government Common Vulnerability ProgramCVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA: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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-269Improper Privilege Management
CAPEC-233Privilege Escalation
T1548.001Setuid and Setgid

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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