Bluetooth LE segmented 'prepare write response' packet may lead to out-of-bounds memory access

published 2023-09-29 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-43716

cvss: 5.9; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits: 0; none known

Forcing the Bluetooth LE stack to segment 'prepare write response' packets can lead to an out-of-bounds memory access.

Patch / fix

fixed in 1

silabs.com GSDK 6.0.0

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-09-23)

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.9	CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/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

silabs.com GSDK

Classification

Weakness

CWE-787 Out-of-bounds Write
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

siliconlabs.lightning.force.com /sfc/servlet.shepherd/document/download/0698Y00000ViQvHQAV/?operationContext=S1
permissions-required, vendor-advisory
github.com /SiliconLabs/gecko_sdk
product

Sources

CVE List CVE-2023-3024
NVD CVE-2023-3024

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