Tesla Wall Connector 24.44.1 Firmware Upgrade security version number mutable to older versions

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Tesla Wall Connector 24.44.1 and classified as critical. The impacted element is an unknown function of the component Firmware Upgrade Handler. Such manipulation leads to security version number mutable to older versions. This vulnerability is uniquely identified as CVE-2025-8321. The attack can be executed directly on the physical device. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Tesla Wall Connector 24.44.1 and classified as critical. Affected by this issue is an unknown code of the component Firmware Upgrade Handler. The manipulation with an unknown input leads to a security version number mutable to older versions vulnerability. Using CWE to declare the problem leads to CWE-1328. Security-version number in hardware is mutable, resulting in the ability to downgrade (roll-back) the boot firmware to vulnerable code versions. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Tesla Wall Connector Firmware Downgrade Vulnerability. This vulnerability allows physically present attackers to execute arbitrary code on affected installations of Tesla Wall Connector devices. Authentication is not required to exploit this vulnerability. The specific flaw exists within the firmware upgrade feature. The issue results from the lack of an anti-downgrade mechanism. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the device. Was ZDI-CAN-26299.

The advisory is available at zerodayinitiative.com. This vulnerability is handled as CVE-2025-8321 since 07/30/2025. The exploitation is known to be easy. Local access is required to approach this attack. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

Upgrading to version 24.44.3 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.8
VulDB Temp Score: 6.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.8
CNA Vector (zdi): 🔒

CVSSv2info

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

Exploitinginfo

Class: Security version number mutable to older versions
CWE: CWE-1328
CAPEC: 🔒
ATT&CK: 🔒

Physical: Yes
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Wall Connector 24.44.3

Timelineinfo

07/30/2025 Advisory disclosed
07/30/2025 +0 days CVE reserved
07/30/2025 +0 days VulDB entry created
07/30/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: ZDI-25-712
Status: Confirmed

CVE: CVE-2025-8321 (🔒)
GCVE (CVE): GCVE-0-2025-8321
GCVE (VulDB): GCVE-100-318182

Entryinfo

Created: 07/30/2025 08:25
Changes: 07/30/2025 08:25 (65)
Complete: 🔍
Cache ID: 216::103

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