CVE-2025-8321Known exploitation

Physical code execution via firmware downgrade

Published Jul 30, 2025 · Updated Jul 30, 2025

Firmware downgrade in Tesla Wall Connector 24.44.1 allows physically proximate attackers to execute arbitrary code through physical access. The firmware upgrade feature accepts an older image because it lacks an anti-downgrade mechanism, exposing earlier firmware flaws. Exploitation requires physical presence and another vulnerability; successful chaining executes code in the device context without authentication.

CVSS severity6.8
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Firmware downgrade in Tesla Wall Connector 24.44.1 allows physically proximate attackers to execute arbitrary code through physical access. The firmware upgrade feature accepts an older image because it lacks an anti-downgrade mechanism, exposing earlier firmware flaws. Exploitation requires physical presence and another vulnerability; successful chaining executes code in the device context without authentication.

The record

CVE
CVE-2025-8321
Published
Jul 30, 2025
Updated
Jul 30, 2025
Vendor
Tesla
Product
Wall Connector
Classifications
CWE-1328, T1601.002
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 30, 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=24.44.1

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Tesla · Wall Connectorversion=24.44.1

Published CVSS scores

6.8Zero Day InitiativeCVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/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 exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1328Security Version Number Mutable to Older Versions
T1601.002Downgrade System Image

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.

Reported exploitation

Technologies

Your stack

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Your stack

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