Vulnerability · Published Jul 25, 2025 · Assigned by VulDB

CVE-2025-8140TOTOLINK A702R HTTP POST Request formWlanMultipleAP buffer overflow

High 8.8

In plain English

A high-severity buffer overflow in A702R from TOTOLINK. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 11.3% (higher than 96% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)11.3%top 4.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was found in TOTOLINK A702R 4.0.0-B20230721.1521. It has been declared as critical. This vulnerability affects unknown code of the file /boafrm/formWlanMultipleAP of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Affected products (as reported)

Vendor	Product	Versions
TOTOLINK	A702R	4.0.0-B20230721.1521

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-317536 | TOTOLINK A702R HTTP POST Request formWlanMultipleAP buffer overflow vdb-entry, technical-description
VDB-317536 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #620486 | TOTOLINK A702R V4.0.0-B20230721.1521 Buffer Overflow third-party-advisory
https://github.com/panda666-888/vuls/blob/main/totolink/a702r/formWlanMultipleAP.md exploit
https://www.totolink.net/ product