CVE-2023-4265

Buffer overflow in Zephyr USB

6.4 Medium

Potential buffer overflow vulnerabilities in the following locations: https://github.com/zephyrproject-rtos/zephyr/blob/main/drivers/usb/device/usb_dc_native_posix.c#L359 https://github.com/zephyrproject-rtos/zephyr/blob/main/drivers/usb/device/usb_dc_native_posix.c#L359 https://github.com/zephyrproject-rtos/zephyr/blob/main/subsys/usb/device/class/netusb/function_rndis... https://github.com/zephyrproject-rtos/zephyr/blob/main/subsys/usb/device/class/netusb/function_rndis.c#L841

Attack profile

How easy it is to exploit

Attack vector: Physical
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: High
Availability: High

Exploit likelihood

0.83%Up 0.8 points since Aug 13, 2023

What each source reports

CVE List Score used 6.4

Buffer overflow in Zephyr USB

Record: CVE-2023-4265
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

EUVDEUVD-2023-54136 6.4

Record: EUVD-2023-54136
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
Updated: 2026-11-03

NVD 6.4

Record: CVE-2023-4265
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
CVSS 3.1: 6.8 MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

OSV 6.4

Buffer overflow in Zephyr USB

Record: CVE-2023-4265
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-4265 is a medium vulnerability (CVSS 6.4) in Zephyrproject Zephyr, published August 12, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.83%, the 57th percentile. No source names a fixed version.