CVE-2025-4496

Name: CVE-2025-4496
Creator: NVD / NIST
Published: 2025-05-10T05:15:50.61+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.7/10EPSS 0.94%

Last modified Jun 17, 2026

CVE-2025-4496 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. 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. EPSS estimates a 0.94% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

CVSS 4.0

8.7/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.94%

56.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Totolink	A3000ru Firmware	4.1.8cu.5241_b20210927
Totolink	A810r Firmware	4.1.8cu.5241_b20210927
Totolink	T10 Firmware	4.1.8cu.5241_b20210927
Totolink	A3100r Firmware	4.1.8cu.5241_b20210927
Totolink	A950rg Firmware	4.1.8cu.5241_b20210927
Totolink	A800r Firmware	4.1.8cu.5241_b20210927
Totolink	N600r Firmware	4.1.8cu.5241_b20210927

References

https://github.com/CH13hh/tmp_store_cc/blob/main/tt/ta/1.mdBroken Link
https://vuldb.com/?ctiid.308212Permissions Required, VDB Entry
https://vuldb.com/?id.308212Third Party Advisory, VDB Entry
https://vuldb.com/?submit.567081Third Party Advisory, VDB Entry
https://www.totolink.net/Product
https://github.com/CH13hh/tmp_store_cc/blob/main/tt/ta/1.mdBroken Link

Timeline

Published: May 10, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-4496?

How severe is CVE-2025-4496?

CVE-2025-4496 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.94% probability of exploitation in the next 30 days.

How do I fix CVE-2025-4496?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-4496?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST