Integer overflow in Zephyrproject Zephyr
CVE-2025-10456
A vulnerability was identified in the handling of Bluetooth Low Energy (BLE) fixed channels (such as SMP or ATT). Specifically, an attacker could exploit a flaw that causes the BLE target (i.e., the device under attack) to attempt to disconnect a fixed channel, which is not allowed per the Bluetooth specification. This leads to undefined behavior, including potential assertion failures, crashes, or memory corruption, depending on the BLE stack implementation.
Vulnerability class: Integer Overflow
EPSS: 0.002 (9.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.
Affected products
Weakness classification (CWE)
References
- vulnerabilities@zephyrproject.org (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-10456?
- CVE-2025-10456 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Integer Overflow or Wraparound. CVSS score: 7.1/10. Published 2025-09-19.
- How severe is CVE-2025-10456?
- High severity. CVSS v3 base score is 7.1 out of 10.