The shell DNS command can cause unpredictable results due to misuse of stack variables.
Priority LOW 36CWE-416Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
Use After Free vulnerability in the Zephyr shell allows a serial or telnet connected user to cause denial of service, and possibly remote code execution. This issue affects: Zephyr shell versions prior to 1.14.0 on all.
Why it matters now
EPSS 0.01104 65th percentileScored 2026-11-07
Fix Fixed shell (Zephyr): 1.14.0
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| zephyrproject | shell | before 1.14.0 | 1.14.0 | Patch available | CNA |
- shell Vendorzephyrproject Affected before 1.14.0 Fixed in 1.14.0 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:* | before 1.14.0 | Vulnerable | zephyrproject |
- cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:* Versions before 1.14.0 Vulnerable ·zephyrproject
Remediation
- Fix · CNA shell (Zephyr) Fixed in 1.14.0
Timeline
- 2026-10-02 Threatist record created from CVE-2017-14201
- 2026-10-03 Alias added: GHSA-v422-67vr-jrj5
References
More zephyrproject Zephyr vulnerabilities
- TI-2026-04422 Out-of-bounds read/write in HTTP WebSocket upgrade via non-null-terminated Sec-WebSocket-Key CVSS 3.1CRITICAL 9.8
- TI-2026-01361 dns: memory‑safety issue in the DNS name parser CVSS 3.1CRITICAL 9.8
- TI-2026-09174 Unterminated URI buffer causes out-of-bounds read in LwM2M firmware pull (Package URI) CVSS 3.1CRITICAL 9.1
- TI-2026-09168 Stack buffer overflow in `net_ipaddr_parse()` IPv4 address-with-port parsing in `subsys/net/ip/utils.c` CVSS 3.1CRITICAL 9.8
- TI-2024-09625 net: lib: http_server: Buffer Under-read CVSS 3.1HIGH 8.6
- TI-2021-02863 Usb bluetooth device ACL read cb buffer overflow CVSS 3.1CRITICAL 9.6
Sources
- CVE-2017-14201 · CVE Program
- CVE-2017-14201 · NVD
- FIRST EPSS
- GHSA-v422-67vr-jrj5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences