CVE-2019-15800
9.8
CRITICAL · CVSS 3.1 · EPSS 3.9% (pctl 90)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. Due to lack of input validation in the cmd_sys_traceroute_exec(), cmd_sys_arp_clear(), and cmd_sys_ping_exec() functions in the libclicmd.so library contained in the firmware, an attacker could leverage these functions to call system() and execute arbitrary commands on the switches. (Note that these functions are currently not called in this version of the firmware, however an attacker could use other vulnerabilities to finally use these vulnerabilities to gain code execution.)
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 3.87% — more likely to be exploited than 90% of all CVEs |
| Weakness | CWE-78 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2019-11-14 |
| Last modified | 2026-06-17 |
Affected (18)
| Vendor | Product |
|---|---|
| zyxel | gs1900-10hp |
| zyxel | gs1900-10hp firmware |
| zyxel | gs1900-16 |
| zyxel | gs1900-16 firmware |
| zyxel | gs1900-24 |
| zyxel | gs1900-24 firmware |
| zyxel | gs1900-24e |
| zyxel | gs1900-24e firmware |
| zyxel | gs1900-24hp |
| zyxel | gs1900-24hp firmware |
| zyxel | gs1900-48 |
| zyxel | gs1900-48 firmware |
| zyxel | gs1900-48hp |
| zyxel | gs1900-48hp firmware |
| zyxel | gs1900-8 |
| zyxel | gs1900-8 firmware |
| zyxel | gs1900-8hp |
| zyxel | gs1900-8hp firmware |
References
→ the Explorer · watch your stack · NVD