DoS: Invalid Initialization in le_read_buffer_size_complete

published 2023-01-19 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-12458

cvss: 9.6; 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 41%
public exploits: 0; none known

A malicious / defect bluetooth controller can cause a Denial of Service due to unchecked input in le_read_buffer_size_complete.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 19 mo ago (2025-04-02)

Exploit prediction

0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-wc2h-h868-q7hj referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.6	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H
NVD	3.1	6.5	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

zephyrproject-rtos zephyr

Classification

Weakness

CWE-703 Improper Check or Handling of Exceptional Conditions
CWE-665 Improper Initialization

References

github.com /zephyrproject-rtos/zephyr/security/advisories/GHSA-wc2h-h868-q7hj
exploit, third-party-advisory

Sources

CVE List CVE-2023-0397
NVD CVE-2023-0397

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.

Summary