CVE-2025-6164Public exploitNetwork attack vector

Router crash via oversized submit-url value

Published Jun 17, 2025 · Updated Jun 17, 2025

Buffer overflow in the HTTP POST handler of TOTOLINK A3002R 4.0.0-B20230531.1404 allows remote authenticated users to crash the router. The /boafrm/formMultiAP route accepts an oversized submit-url value in a form-encoded POST request, and processing that value overruns a memory buffer. The published request includes a sessionCheck token, and the demonstrated consequence is denial of service rather than code execution.

CVSS severity8.8
High
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Buffer overflow in the HTTP POST handler of TOTOLINK A3002R 4.0.0-B20230531.1404 allows remote authenticated users to crash the router. The /boafrm/formMultiAP route accepts an oversized submit-url value in a form-encoded POST request, and processing that value overruns a memory buffer. The published request includes a sessionCheck token, and the demonstrated consequence is denial of service rather than code execution.

The record

CVE
CVE-2025-6164
Published
Jun 17, 2025
Updated
Jun 17, 2025
Vendor
TOTOLINK
Product
A3002R
Classifications
CWE-119, CWE-120
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.0.0-B20230531.1404

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TOTOLINK · A3002Rversion=4.0.0-B20230531.1404

Published CVSS scores

8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C
7.4VulDBCVSS: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:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo