High severity · published Apr 26, 2026
CVE-2026-7033
Tenda F456 SafeClientFilter fromSafeClientFilter buffer overflow
8.8
CVSS
0.7%
EPSS
No
On KEV
Description
A vulnerability has been found in Tenda F456 1.0.0.5. Affected by this vulnerability is the function fromSafeClientFilter of the file /goform/SafeClientFilter. Such manipulation of the argument menufacturer/Go leads to buffer overflow. The attack can 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)0.7% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
F4
F456 · Tenda
1.0.0.5 · source: vendor
FF
F456 Firmware · Tenda
1.0.0.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-7033
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-7033
Exploit
https://github.com/Litengzheng/vuldb_new/blob/main/F456/vul_123/README.md
Third Party Advisory
https://vuldb.com/submit/798454
Third Party Advisory
https://vuldb.com/vuln/359613
Permissions Required
https://vuldb.com/vuln/359613/cti
Product
https://www.tenda.com.cn/
More from F456
8.8
CVE-2026-7102
Tenda F456 httpd WriteFacMac FromWriteFacMac command injection
8.8
CVE-2026-7101
Tenda F456 httpd WrlclientSet fromWrlclientSet buffer overflow
8.8
CVE-2026-7100
Tenda F456 httpd Natlimit fromNatlimitof buffer overflow
8.8
CVE-2026-7099
Tenda F456 httpd QuickIndex formQuickIndex buffer overflow
8.8
CVE-2026-7098
Tenda F456 httpd DhcpListClient fromDhcpListClient buffer overflow