CVE-2023-4263

Name: CVE-2023-4263
Creator: NVD / NIST
Published: 2023-10-13T21:15:51.777+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.48%

Last modified Jun 17, 2026

CVE-2023-4263 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Potential buffer overflow vulnerability in the Zephyr IEEE 802.15.4 nRF 15.4 driver. EPSS estimates a 0.48% chance of exploitation in the next 30 days.

Description

Potential buffer overflow vulnerability in the Zephyr IEEE 802.15.4 nRF 15.4 driver

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.48%

38.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Zephyrproject	Zephyr	<= 3.4.0

References

http://packetstormsecurity.com/files/175657/Zephyr-RTOS-3.x.0-Buffer-Overflows.htmlThird Party Advisory
http://seclists.org/fulldisclosure/2023/Nov/1Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/11/07/1Mailing List
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-rf6q-rhhp-pqhfThird Party Advisory
http://packetstormsecurity.com/files/175657/Zephyr-RTOS-3.x.0-Buffer-Overflows.htmlThird Party Advisory
http://seclists.org/fulldisclosure/2023/Nov/1Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/11/07/1Mailing List
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-rf6q-rhhp-pqhfThird Party Advisory

Timeline

Published: Oct 13, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-4263?

Potential buffer overflow vulnerability in the Zephyr IEEE 802.15.4 nRF 15.4 driver

How severe is CVE-2023-4263?

CVE-2023-4263 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4263?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-4263?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST