Vulnerability · Published Apr 26, 2026 · Assigned by VulDB

CVE-2026-7054Tenda F456 httpd PPTPDClient fromPptpUserAdd buffer overflow

High 8.8

In plain English

A high-severity buffer overflow in F456 from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.7%top 48.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A weakness has been identified in Tenda F456 1.0.0.5. This vulnerability affects the function fromPptpUserAdd of the file /goform/PPTPDClient of the component httpd. Executing a manipulation of the argument opttype/usernamewith can lead to buffer overflow. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks.

Affected products (as reported)

Vendor	Product	Versions
Tenda	F456	1.0.0.5

Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-359627 | Tenda F456 httpd PPTPDClient fromPptpUserAdd buffer overflow vdb-entry, technical-description
VDB-359627 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #798456 | Tenda F456 v1.0.0.5 Stack-based Buffer Overflow third-party-advisory
https://github.com/Litengzheng/vuldb_new/blob/main/F456/vul_125/README.md exploit
https://www.tenda.com.cn/ product