High severity · published Jul 18, 2025
CVE-2025-7796
Tenda FH451 PPTPDClient fromPptpUserAdd stack-based overflow
8.8
CVSS
1%
EPSS
No
On KEV
Description
A vulnerability, which was classified as critical, was found in Tenda FH451 1.0.0.9. This affects the function fromPptpUserAdd of the file /goform/PPTPDClient. The manipulation of the argument Username leads to stack-based buffer overflow. It is possible to initiate the attack 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
FH
FH451 · Tenda
1.0.0.9 · source: vendor
FF
Fh451 Firmware · Tenda
1.0.0.9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-7796
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-7796
Exploit
https://github.com/panda666-888/vuls/blob/main/tenda/fh451/fromPptpUserAdd.md
Exploit
https://github.com/panda666-888/vuls/blob/main/tenda/fh451/fromPptpUserAdd.md#poc
Permissions Required
https://vuldb.com/?ctiid.316857
Third Party Advisory
https://vuldb.com/?id.316857
Third Party Advisory
https://vuldb.com/?submit.616345
Product
https://www.tenda.com.cn/
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