CVE-2022-32503Public exploit

Firmware extraction and code execution via exposed JTAG

Published May 9, 2024 · Updated Feb 13, 2025

Exposed JTAG interfaces in Nuki Keypad before 1.9.2 and Nuki Fob before 1.8.1 allow physically proximate attackers to control code execution. Through-hole test points on the circuit board expose labeled JTAG signals without authentication, enabling boundary-scan access to processor state. Physical circuit-board access is required; the interface permits firmware extraction and modification of internal or external flash memory.

CVSS severity7.6
High
EPSS probability0.50%
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

Exposed JTAG interfaces in Nuki Keypad before 1.9.2 and Nuki Fob before 1.8.1 allow physically proximate attackers to control code execution. Through-hole test points on the circuit board expose labeled JTAG signals without authentication, enabling boundary-scan access to processor state. Physical circuit-board access is required; the interface permits firmware extraction and modification of internal or external flash memory.

The record

CVE
CVE-2022-32503
Published
May 9, 2024
Updated
Feb 13, 2025
Vendor
Nuki Home Solutions
Product
Nuki Keypad
Classifications
CWE-306, T1542.001
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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 <1.9.2

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Nuki Home Solutions · Nuki Keypadversion=0 <1.9.2
Nuki Home Solutions · Nuki Fobversion=0 <1.8.1

Published CVSS scores

7.6CISA-ADPCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1542.001System Firmware

Public exploit references

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