Serial API Buffer Overflow in Z/IP Gateway

published 2023-06-21 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-12955

cvss: 7.1; 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 19%
public exploits: 0; none known

Multiple buffer overflow vulnerabilities in SiLabs Z/IP Gateway SDK version 7.18.01 and earlier allow an attacker with invasive physical access to a Z-Wave controller device to overwrite global memory and potentially execute arbitrary code.

Patch / fix

fixed in 1

Silicon Labs Z/IP Gateway 7.18.03

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 23 mo ago (2024-12-06)

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.1	CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD	3.1	6.8	CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Silicon Labs Z/IP Gateway

Classification

Weakness

CWE-787 Out-of-bounds Write
CWE-125 Out-of-bounds Read
CWE-120 Buffer Copy without Checking Size of Input

References

siliconlabs.lightning.force.com /sfc/servlet.shepherd/document/download/0698Y00000V6HZzQAN?operationContext=S1
permissions-required

Sources

CVE List CVE-2023-0970
NVD CVE-2023-0970

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