Vulnerability · Published Jun 10, 2025 · Assigned by VulDB

CVE-2025-5909TOTOLINK EX1200T HTTP POST Request formReflashClientTbl buffer overflow

High 8.8

In plain English

A high-severity buffer overflow in EX1200T from TOTOLINK. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.5%top 25.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability, which was classified as critical, was found in TOTOLINK EX1200T up to 4.1.2cu.5232_B20210713. Affected is an unknown function of the file /boafrm/formReflashClientTbl of the component HTTP POST Request Handler. The manipulation leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Affected products (as reported)

Vendor	Product	Versions
TOTOLINK	EX1200T	4.1.2cu.5232_B20210713

Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-311682 | TOTOLINK EX1200T HTTP POST Request formReflashClientTbl buffer overflow vdb-entry
VDB-311682 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #592270 | TOTOLINK EX1200T V4.1.2cu.5232_B20210713 Buffer Overflow third-party-advisory
https://github.com/byxs0x0/cve2/blob/main/5.md exploit
https://www.totolink.net/ product