CVE-2023-4257 json
Unchecked user input length in the Zephyr WiFi shell module
published 2023-10-13 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-54128
- cvss
- 7.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
Unchecked user input length in /subsys/net/l2/wifi/wifi_shell.c can cause buffer overflows.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 23 mo ago
Exploit prediction
1.06% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-853q-q69w-gf5j referenced PoC, tagged "exploit" by a source, unverified
- packetstormsecurity.com http://packetstormsecurity.com/files/175657/Zephyr-RTOS-3.x.0-Buffer-Overflows.html referenced PoC, tagged "exploit" by a source, unverified
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 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- zephyrproject-rtos Zephyr
Classification
References
-
github.com
/zephyrproject-rtos/zephyr/security/advisories/GHSA-853q-q69w-gf5j
exploit, vendor-advisory
-
packetstormsecurity.com
/files/175657/Zephyr-RTOS-3.x.0-Buffer-Overflows.html
exploit, third-party-advisory
-
openwall.com
/lists/oss-security/2023/11/07/1
mailing-list
-
seclists.org
/fulldisclosure/2023/Nov/1
mailing-list, third-party-advisory
Sources
- CVE List CVE-2023-4257
- NVD CVE-2023-4257
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