CVE-2025-67445
Last modified
CVE-2025-67445 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. TOTOLINK X5000R V9.1.0cu.2415_B20250515 contains a denial-of-service vulnerability in /cgi-bin/cstecgi.cgi. The CGI reads the CONTENT_LENGTH environment variable and allocates memory using malloc (CONTENT_LENGTH + 1) without sufficient bounds checking. EPSS estimates a 0.35% chance of exploitation in the next 30 days.
Description
TOTOLINK X5000R V9.1.0cu.2415_B20250515 contains a denial-of-service vulnerability in /cgi-bin/cstecgi.cgi. The CGI reads the CONTENT_LENGTH environment variable and allocates memory using malloc (CONTENT_LENGTH + 1) without sufficient bounds checking. When lighttpd s request size limit is not enforced, a crafted large POST request can cause memory exhaustion or a segmentation fault, leading to a crash of the management CGI and loss of availability of the web interface.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Totolink | X5000r Firmware | 9.1.0cu.2415_b20250515 |
References
- https://github.com/DaRkSpOoOk/CVE-2025-67445Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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