High severity · published Jun 21, 2025
CVE-2025-6400
TOTOLINK N300RH HTTP POST Message formPortFw buffer overflow
8.8
CVSS
1%
EPSS
No
On KEV
Description
A vulnerability was found in TOTOLINK N300RH 6.1c.1390_B20191101 and classified as critical. Affected by this issue is some unknown functionality of the file /boafrm/formPortFw of the component HTTP POST Message Handler. The manipulation of the argument service_type leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 62% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N3
N300RH · TOTOLINK
6.1c.1390_B20191101 · source: vendor
NF
N300rh Firmware · Totolink
6.1c.1390_b20191101 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-6400
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-6400
Exploit
https://github.com/d2pq/cve/blob/main/616/20.md
Exploit
https://github.com/d2pq/cve/blob/main/616/20.md#poc
Permissions Required
https://vuldb.com/?ctiid.313394
Third Party Advisory
https://vuldb.com/?id.313394
Third Party Advisory
https://vuldb.com/?submit.597687
Product
https://www.totolink.net/
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