How severe is CVE-2025-5479?

CVE-2025-5479 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-5479 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-2025-5479?

CVE-2025-5479 affects Sony Xav-ax8500 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-5479?

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-2025-5479 have an EU (EUVD) identifier?

Yes. CVE-2025-5479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18882.

When was CVE-2025-5479 published?

CVE-2025-5479 was published on 2025-06-21 and last updated on 2026-06-17.

CVE-2025-5479

CVE-2025-5479 is a high-severity vulnerability in Sony Xav-ax8500 Firmware with a CVSS 3.x base score of 7.5. 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-122.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-18882
Weakness: CWE-122
Affected product: Sony Xav-ax8500 Firmware
Published: 2025-06-21
Last modified: 2026-06-17

Description

Sony XAV-AX8500 Bluetooth AVCTP Protocol Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Sony XAV-AX8500 devices. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in order to exploit this vulnerability. The specific flaw exists within the implementation of the Bluetooth AVCTP protocol. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26290.

Frequently asked questions

What is CVE-2025-5479?: Sony XAV-AX8500 Bluetooth AVCTP Protocol Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Sony XAV-AX8500 devices. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in order to exploit this vulnerability. The specific flaw exists within the implementation of the Bluetooth AVCTP protocol. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26290.
How severe is CVE-2025-5479?: CVE-2025-5479 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-5479 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-2025-5479?: CVE-2025-5479 affects Sony Xav-ax8500 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-5479?: 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-2025-5479 have an EU (EUVD) identifier?: Yes. CVE-2025-5479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18882.
When was CVE-2025-5479 published?: CVE-2025-5479 was published on 2025-06-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:sony:xav-ax8500_firmware:*:*:*:*:*:*:*:*

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