Vulnerability · Published May 16, 2025 · Assigned by VulDB

CVE-2025-4731TOTOLINK A3002R/A3002RU HTTP POST Request formPortFw buffer overflow

High 8.8

In plain English

A high-severity buffer overflow in A3002R from TOTOLINK. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.8%top 41.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability classified as critical has been found in TOTOLINK A3002R and A3002RU 3.0.0-B20230809.1615. This affects an unknown part of the file /boafrm/formPortFw of the component HTTP POST Request Handler. The manipulation of the argument service_type/ip_subnet leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Affected products (as reported)

Vendor	Product	Versions
TOTOLINK	A3002R	3.0.0-B20230809.1615
TOTOLINK	A3002RU	3.0.0-B20230809.1615

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

References

VDB-309033 | TOTOLINK A3002R/A3002RU HTTP POST Request formPortFw buffer overflow vdb-entry, technical-description
VDB-309033 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #570688 | TOTOLINK A3002RU V3 and A3002R_V4 V3.0.0-B20230809.1615 Buffer Overflow third-party-advisory
https://github.com/CH13hh/tmp_store_cc/blob/main/tt/ta/4.md broken-link, exploit
https://www.totolink.net/ product