Buffer overflow in Alpine Ilx-F511
CVE-2026-118603
Alpine iLX-F511 vCard Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected Alpine iLX-F511 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-29017.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Alpine Ilx-F511 — versions 7.0.0000
Weakness classification (CWE)
References
- www.zerodayinitiative.com/advisories/ZDI-26-821/ (x_research-advisory)
Frequently asked questions
- What is CVE-2026-118603?
- CVE-2026-118603 is a high-severity vulnerability in Alpine Ilx-F511, classified under Stack-based Buffer Overflow. CVSS score: 8.0/10. Published 2026-10-28.
- How severe is CVE-2026-118603?
- High severity. CVSS v3 base score is 8.0 out of 10.