High severity · published Apr 28, 2026
CVE-2026-7219
Totolink N300RT formIpQoS buffer overflow
7.2
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N3
N300RT · Totolink
3.4.0-B20250430 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-7219
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-7219
github.com
https://github.com/xiaohaiyang-ai/IoT-Vulnerability-Research/tree/main/Vendors/TOTOLINK/N300RT/formIpQoS-Bof
vuldb.com
https://vuldb.com/submit/808194
vuldb.com
https://vuldb.com/vuln/359819
vuldb.com
https://vuldb.com/vuln/359819/cti
www.totolink.net
https://www.totolink.net/
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