CVE-2025-4496: t10 Buffer Overflow (CVSS 8.8)

Description

A vulnerability was found in TOTOLINK T10, A3100R, A950RG, A800R, N600R, A3000RU and A810R 4.1.8cu.5241_B20210927. It has been declared as critical. This vulnerability affects the function CloudACMunualUpdate of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument FileName leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

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CVSS v3.1 Score

8.8

HIGH

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

Weakness Type (CWE)

CWE-119 Buffer Overflow

CWE-120 CWE-120

Affected Products

Vendor	Product	Versions
totolink	a3000ru_firmware	All
totolink	a3000ru	All
totolink	a810r_firmware	All
totolink	a810r	All
totolink	t10_firmware	All
totolink	t10	All
totolink	a3100r_firmware	All
totolink	a3100r	All
totolink	a950rg_firmware	All
totolink	a950rg	All
totolink	a800r_firmware	All
totolink	a800r	All
totolink	n600r_firmware	All
totolink	n600r	All

References

Other References

https://github.com/CH13hh/tmp_store_cc/blob/main/tt/ta/1.md https://vuldb.com/?ctiid.308212 https://vuldb.com/?id.308212 https://vuldb.com/?submit.567081 https://www.totolink.net/ https://github.com/CH13hh/tmp_store_cc/blob/main/tt/ta/1.md

Frequently Asked Questions

What is CVE-2025-4496? +

A vulnerability was found in TOTOLINK T10, A3100R, A950RG, A800R, N600R, A3000RU and A810R 4.1.8cu.5241_B20210927. It has been declared as critical. This vulnerability affects the function CloudACMunualUpdate of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument FileName leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2025-4496? +

CVE-2025-4496 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-4496? +

CVE-2025-4496 affects products from totolink, specifically: a3000ru, a3000ru_firmware, a3100r, a3100r_firmware, a800r, a800r_firmware, a810r, a810r_firmware, a950rg, a950rg_firmware, n600r, n600r_firmware, t10, t10_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-4496? +

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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