How severe is CVE-2025-8477?

CVE-2025-8477 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-8477 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-8477?

CVE-2025-8477 affects Alpsalpine Ilx-507 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-8477?

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-2025-8477 have an EU (EUVD) identifier?

Yes. CVE-2025-8477 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23386.

When was CVE-2025-8477 published?

CVE-2025-8477 was published on 2025-08-01 and last updated on 2026-06-17.

CVE-2025-8477

CVE-2025-8477 is a high-severity vulnerability in Alpsalpine Ilx-507 Firmware with a CVSS 3.x base score of 7.4. 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-121.

Key facts

Severity: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-23386
Weakness: CWE-121
Affected product: Alpsalpine Ilx-507 Firmware
Published: 2025-08-01
Last modified: 2026-06-17

Description

Alpine iLX-507 vCard Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected Alpine iLX-507 devices. User interaction is required to exploit this vulnerability in that the target must connect to a malicious Bluetooth device. The specific flaw exists within the parsing of vCard data. The issue results from the lack of proper validation of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-26324.

Frequently asked questions

What is CVE-2025-8477?: Alpine iLX-507 vCard Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected Alpine iLX-507 devices. User interaction is required to exploit this vulnerability in that the target must connect to a malicious Bluetooth device. The specific flaw exists within the parsing of vCard data. The issue results from the lack of proper validation of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-26324.
How severe is CVE-2025-8477?: CVE-2025-8477 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-8477 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-8477?: CVE-2025-8477 affects Alpsalpine Ilx-507 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-8477?: 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-2025-8477 have an EU (EUVD) identifier?: Yes. CVE-2025-8477 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23386.
When was CVE-2025-8477 published?: CVE-2025-8477 was published on 2025-08-01 and last updated on 2026-06-17.

References

https://www.zerodayinitiative.com/advisories/ZDI-25-767/

Affected products (1)

cpe:2.3:o:alpsalpine:ilx-507_firmware:6.0.000:*:*:*:*:*:*:*

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