CVE-2022-32509

Traffic interception via missing TLS certificate validation

Published May 9, 2024 · Updated Feb 13, 2025

Improper certificate validation in Nuki Smart Lock 3.0 Pro and Bridge firmware allows man-in-the-middle attackers to alter TLS traffic. The devices accept supporting web-service certificates without validation, allowing an intercepting proxy to capture and modify WebSocket messages. Exploitation requires control of the network path between a device and Nuki services; exposed traffic can be read and modified, but no direct lock action is established.

CVSS severity8.8
High
EPSS probability0.29%
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

Improper certificate validation in Nuki Smart Lock 3.0 Pro and Bridge firmware allows man-in-the-middle attackers to alter TLS traffic. The devices accept supporting web-service certificates without validation, allowing an intercepting proxy to capture and modify WebSocket messages. Exploitation requires control of the network path between a device and Nuki services; exposed traffic can be read and modified, but no direct lock action is established.

The record

CVE
CVE-2022-32509
Published
May 9, 2024
Updated
Feb 13, 2025
Vendor
Nuki
Product
Nuki Bridge v2
Classifications
CWE-295, T1557
Attack vector
adjacent
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 <2.13.2

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Nuki · Nuki Bridge v2version=0 <2.13.2
Nuki · Nuki Smart Lock 3.0 Proversion=0 <3.3.5
Nuki · Nuki Bridge v1version=0 <1.22.0

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.5NCC GroupAV:N/AC:L/Au:N/C:C/I:P/A:N

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1557Adversary-in-the-Middle

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