Vulnerability · Published Oct 6, 2026 · Assigned by VulDB

CVE-2026-105778Tenda AC5 Wifi setWifi stack-based overflow

Critical 9.9

In plain English

A critical-severity stack buffer overflow in AC5 from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities).

Severity (CVSS 3.1)9.9Critical

Exploit odds (30 days)0.5%top 58.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability has been found in Tenda AC5 02.03.01.111_multi. Affected by this issue is some unknown functionality of the file /goform/setWifi of the component Wifi Handler. Such manipulation of the argument wifiPwd leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Affected products (as reported)

Vendor	Product	Versions
Tenda	AC5	02.03.01.111_multi

Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-413811 | Tenda AC5 Wifi setWifi stack-based overflow vdb-entry, technical-description
VDB-413811 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-105778 | CVE Analysis and Report third-party-advisory
Submit #992587 | Tenda AC5 V02.03.01.111_multi Buffer Overflow third-party-advisory
https://github.com/raisecnull/Tenda-AC5v3-BOF/blob/main/blog.md exploit
https://www.tenda.com.cn/ product