net: shell: Improper input validation

published 2023-05-30 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-12794

cvss: 6.7; 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 44%
public exploits: 0; none known

At the most basic level, an invalid pointer can be input that crashes the device, but with more knowledge of the device’s memory layout, further exploitation is possible.

Patch / fix

fixed in 1

zephyrproject-rtos zephyr v3.3

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 21 mo ago (2025-01-13)

Exploit prediction

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.7	CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:H
NVD	3.1	7.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H

Affected products

zephyrproject-rtos zephyr

Classification

Weakness

CWE-20 Improper Input Validation
CWE-476 NULL Pointer Dereference

References

github.com /zephyrproject-rtos/zephyr/security/advisories/GHSA-9xj8-6989-r549
vendor-advisory

Sources

CVE List CVE-2023-0779
NVD CVE-2023-0779

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