How severe is CVE-2025-8320?

CVE-2025-8320 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-8320 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-8320?

CVE-2025-8320 affects Tesla Wall Connector Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-8320?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-8320 have an EU (EUVD) identifier?

Yes. CVE-2025-8320 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23136.

When was CVE-2025-8320 published?

CVE-2025-8320 was published on 2025-07-30 and last updated on 2026-06-17.

CVE-2025-8320

CVE-2025-8320 is a high-severity vulnerability in Tesla Wall Connector Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1284.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-23136
Weakness: CWE-1284
Affected product: Tesla Wall Connector Firmware
Published: 2025-07-30
Last modified: 2026-06-17

Description

Tesla Wall Connector Content-Length Header Improper Input Validation Remote Code Execution Vulnerability. This vulnerability allows network-adjacent 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 parsing of the HTTP Content-Length header. The issue results from the lack of proper validation of user-supplied data, which can result in memory access past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-26300.

Frequently asked questions

What is CVE-2025-8320?: Tesla Wall Connector Content-Length Header Improper Input Validation Remote Code Execution Vulnerability. This vulnerability allows network-adjacent 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 parsing of the HTTP Content-Length header. The issue results from the lack of proper validation of user-supplied data, which can result in memory access past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-26300.
How severe is CVE-2025-8320?: CVE-2025-8320 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-8320 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-8320?: CVE-2025-8320 affects Tesla Wall Connector Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-8320?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-8320 have an EU (EUVD) identifier?: Yes. CVE-2025-8320 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23136.
When was CVE-2025-8320 published?: CVE-2025-8320 was published on 2025-07-30 and last updated on 2026-06-17.

References

https://www.zerodayinitiative.com/advisories/ZDI-25-711/

Affected products (1)

cpe:2.3:o:tesla:wall_connector_firmware:*:*:*:*:*:*:*:*

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