CVE-2025-60699: a950rg Stack Overflow — Exploit

Description

A buffer overflow vulnerability exists in the TOTOLINK A950RG Router firmware V5.9c.4592_B20191022_ALL within the `global.so` binary. The `getSaveConfig` function retrieves the `http_host` parameter from user input via `websGetVar` and copies it into a fixed-size stack buffer (`v13`) using `strcpy()` without performing any length checks. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted HTTP request to the router's web interface, potentially leading to arbitrary code execution.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Weakness Type (CWE)

CWE-121 CWE-121

Affected Products

Vendor	Product	Versions
totolink	a950rg_firmware	All
totolink	a950rg	All

References

Exploits

https://github.com/yifan20020708/SGTaint-0-day/blob/main/ToToLink/ToToLink-A950RG/CVE-2025-60699.md

Other References

https://github.com/yifan20020708/SGTaint-0-day/blob/main/ToToLink/ToToLink-A950RG/2.md https://www.totolink.net/

Frequently Asked Questions

What is CVE-2025-60699? +

A buffer overflow vulnerability exists in the TOTOLINK A950RG Router firmware V5.9c.4592_B20191022_ALL within the `global.so` binary. The `getSaveConfig` function retrieves the `http_host` parameter from user input via `websGetVar` and copies it into a fixed-size stack buffer (`v13`) using `strcpy()` without performing any length checks. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted HTTP request to the router's web interface, potentially leading to arbitrary code execution. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-60699? +

CVE-2025-60699 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-60699? +

CVE-2025-60699 affects products from totolink, specifically: a950rg, a950rg_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-60699? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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