Vulnerability · Published Feb 8, 2026 · Assigned by VulDB

CVE-2026-2181Tenda RX3 openSchedWifi stack-based overflow

High 8.8

In plain English

A high-severity stack buffer overflow in RX3 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 53% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.7%top 47.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A security flaw has been discovered in Tenda RX3 16.03.13.11. Affected by this vulnerability is an unknown functionality of the file /goform/openSchedWifi. Performing a manipulation of the argument schedStartTime/schedEndTime results in stack-based buffer overflow. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks.

Affected products (as reported)

Vendor	Product	Versions
Tenda	RX3	16.03.13.11

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-344884 | Tenda RX3 openSchedWifi stack-based overflow vdb-entry, technical-description
VDB-344884 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #749710 | Tenda RX3 V16.03.13.11 Stack-based Buffer Overflow third-party-advisory
https://github.com/LX-66-LX/cve-new/issues/5 exploit, issue-tracking
https://www.tenda.com.cn/ product