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Fencer Vulns
high 7.6

CVE-2023-4263 json

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

published 2023-10-13 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-54134

cvss
7.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits
0
none known

Summary

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

Exploit prediction

0.53% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.6 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
NVD 3.1 8.8 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • zephyrproject-rtos Zephyr

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input
  • CWE-121 Stack-based Buffer Overflow

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.