🛡️ CVE-2023-4263 — zephyr

🟠 CVSS 7.6 — High ✅ No Known Exploit CWE-120 NVD
7.6
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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

How this vulnerability can be exploited

This issue can be reached from an adjacent network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability high.

Weakness class

CVE-2023-4263 is classified as CWE-120: Classic Buffer Overflow. Input is copied into a fixed-size buffer without a length check, overwriting memory past the end of it.

Affected software and timeline

Affected software: zephyr (fixed in 3.4.0). Published on 13 October 2023 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

packetstormsecurity.com
seclists.org
www.openwall.com
github.com
packetstormsecurity.com
seclists.org
www.openwall.com
github.com

Details

Severity HIGH
CVSS Score 7.6
CVSS Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
CWE CWE-120
Public Exploit ✅ No
Source NVD
Published 2023-10-13
Updated 2026-08-11
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
zephyr 3.4.0

Similar Threats

Site Security Check

Is zephyr part of your stack?

CVE-2023-4263 is rated CVSS 7.6 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

Scan My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

More CVE 2023 advisories

Part of CVE 2023 in the advisory index.