Vulnerability · Published Aug 14, 2026 · Assigned by VulDB

CVE-2026-19789Tenda AC1206 httpd web management interface WifiGuestSet set_wl_guest_iplist stack-based overflow

High 8.8

In plain English

A high-severity stack buffer overflow in AC1206 from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 58% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.9%top 41.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was determined in Tenda AC1206 15.03.06.23_multi_TD01. This vulnerability affects the function set_wl_guest_iplist of the file /goform/WifiGuestSet of the component httpd web management interface. This manipulation of the argument shareSpeed causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.

Affected products (as reported)

Vendor	Product	Versions
Tenda	AC1206	15.03.06.23_multi_TD01

Weakness: CWE-121, 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-389756 | Tenda AC1206 httpd web management interface WifiGuestSet set_wl_guest_iplist stack-based overflow vdb-entry, technical-description
VDB-389756 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-19789 | CVE Analysis and Report third-party-advisory
Submit #868921 | Tenda AC12 US_AC1206V1.0RTL_V15.03.06.23_multi_TD01.bin Buffer Overflow third-party-advisory
https://github.com/lipenghai/iot_bug/blob/main/Tenda/AC12/2.md exploit
https://www.tenda.com.cn/ product