PT-2026-35235 · Tenda · F456

Ltzhust · Published 2026-04-07 · Updated 2026-04-26 · CVE-2026-7057

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Tenda F456 version 1.0.0.5

Description A buffer overflow exists in the fromSetCfm() function within the httpd component of the firmware. This issue occurs due to the lack of input size validation when copying buffers while processing the funcname and funcpara1 parameters. A remote attacker can exploit this by sending a specially crafted POST request to the '/goform/setcfm' endpoint to execute arbitrary code.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability. As a temporary workaround, restrict access to the '/goform/setcfm' endpoint to minimize the risk of exploitation.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-119

CWE-120

Related Identifiers

BDU:2026-05840

CVE-2026-7057

Affected Products

F456

References · 7

• 🔥 https://github.com/Litengzheng/vuldb_new/blob/main/F456/vul_128/README.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-7057 · Security Note
• https://bdu.fstec.ru/vul/2026-05840 · Security Note
• https://vuldb.com/vuln/359630/cti · Note
• https://tenda.com.cn · Note
• https://vuldb.com/vuln/359630 · Note
• https://vuldb.com/submit/798459 · Note