Naxclow Smart Doorbell X3/X Smart Home/V720/ix cam Firmware Image hard-coded key

CVSS Meta Temp Score
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CTI Interest Score
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9.6$0-$5k4.61

Summaryinfo

A vulnerability was found in Naxclow Smart Doorbell X3, X Smart Home, V720 and ix cam. It has been classified as very critical. Affected by this vulnerability is an unknown functionality of the component Firmware Image Handler. This manipulation causes hard-coded key. This vulnerability is handled as CVE-2026-28742. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as very critical was found in Naxclow Smart Doorbell X3, X Smart Home, V720 and ix cam (unknown version). Affected by this vulnerability is an unknown code block of the component Firmware Image Handler. The manipulation with an unknown input leads to a hard-coded key vulnerability. The CWE definition for the vulnerability is CWE-321. The use of a hard-coded cryptographic key significantly increases the possibility that encrypted data may be recovered. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Naxclow devices use a uniform request-signing scheme based on a hard-coded, platform-wide salt embedded in every firmware image. Once this salt is recovered from any device, an attacker can generate valid signatures for arbitrary device or account operations due to the absence of per-device keys, server-side nonce tracking, or replay protections. Combined with the system’s use of plain HTTP for control-plane traffic, the construction enables broad request forgery and impersonation across the platform.

The weakness was released by Temuri Takalandze as icsa-26-162-02. It is possible to read the advisory at cisa.gov. This vulnerability is known as CVE-2026-28742 since 06/08/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/13/2026). The attack technique deployed by this issue is T1600.001 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-36525). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector (icscert): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Hard-coded key
CWE: CWE-321 / CWE-320
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/08/2026 CVE reserved
06/12/2026 +4 days Advisory disclosed
06/12/2026 +0 days VulDB entry created
06/13/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: icsa-26-162-02
Researcher: Temuri Takalandze
Status: Not defined

CVE: CVE-2026-28742 (🔒)
GCVE (CVE): GCVE-0-2026-28742
GCVE (VulDB): GCVE-100-370711
EUVD: 🔒

Entryinfo

Created: 06/12/2026 22:39
Updated: 06/13/2026 02:04
Changes: 06/12/2026 22:39 (74), 06/13/2026 02:04 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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