Vulnerability · Published Jun 5, 2025 · Assigned by VulDB

CVE-2025-5671TOTOLINK N302R Plus HTTP POST Request formPortFw buffer overflow

High 8.8

In plain English

A high-severity buffer overflow in N302R Plus from TOTOLINK. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.8%top 43.5% 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 N302R Plus up to 3.4.0-B20201028. Affected is an unknown function of the file /boafrm/formPortFw of the component HTTP POST Request Handler. The manipulation of the argument service_type 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	N302R Plus	3.4.0-B20201028

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-311160 | TOTOLINK N302R Plus HTTP POST Request formPortFw buffer overflow vdb-entry, technical-description
VDB-311160 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #590093 | TOTOLINK N302R-Plus <=V3.4.0-B20201028 Buffer Overflow third-party-advisory
https://github.com/byxs0x0/cve2/blob/main/530/1.md exploit
https://www.totolink.net/ product