CVE-2026-7219 Details
Description
A flaw has been found in Totolink N300RT 3.4.0-B20250430. This affects an unknown function of the file /boafrm/formIpQoS. Executing a manipulation of the argument entry_name can lead to buffer overflow. The attack may be performed from remote. The exploit has been published and may be used.
A stack-based buffer overflow vulnerability has been identified in the Totolink N300RT router, specifically in the boa web server version 3.4.0-B20250430. The issue arises in the '/boafrm/formIpQoS' endpoint, where the 'entry_name' parameter lacks proper length validation. This vulnerability allows authenticated attackers to send crafted POST requests that overflow a local stack buffer, potentially leading to remote code execution or a denial-of-service condition by overwriting the saved return address and hijacking the program's control flow.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Apr 28, 2026CISA-ADP
Assessed Apr 29, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/xiaohaiyang-ai/IoT-Vulnerability-Research/tree/main/Vendors/TOTOLINK/N300RT/formIpQoS-Bof | [email protected] | ExploitTechnical Analysis |
| https://vuldb.com/submit/808194 | [email protected] | Technical Description |
| https://vuldb.com/vuln/359819 | [email protected] | AdvisoryExploitPartial Content |
| https://vuldb.com/vuln/359819/cti | [email protected] | Content Wall |
| https://www.totolink.net/ | [email protected] | Vendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| TOTOLINK N300RT | <= 3.4.0-B20250430 (semver) |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 28, 2026 | New CVE Received | [email protected] |