CVE-2025-4496

TOTOLINK T10/A3100R/A950RG/A800R/N600R/A3000RU/A810R cstecgi.cgi CloudACMunualUpdate buffer overflow

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.

Affected

TOTOLINK · T10 · A3100R · A950RG · A800R · N600R · A3000RU

CVSS v4.0 VULDB

8.7 HIGHCVSS: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

CVSS v3.1 NVD

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

CVSS v3.1 VULDB

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

CVSS v2.0 VULDB

9.0 HIGHAV:N/AC:L/Au:S/C:C/I:C/A:C

EPSS

1.23% chance of exploitation in the next 30 days, 69th percentile

Published

2025-05-10

Updated

2025-05-12

Proof-of-concept exploits (1)

• CH13hh/tmp_store_cc/blob/main/tt/ta/1.md2★ · 2026-05-26

Security advisories

• https://vuldb.com/?id.308212
• https://vuldb.com/?submit.567081
• https://www.totolink.net

References

• CVE Record
• NVD entry

Related

• CVE-2025-3328
• CVE-2025-3346
• CVE-2025-3786
• CVE-2025-3854
• CVE-2025-4298
• CVE-2025-4299