Buffer overflow in Tenda Rx3
CVE-2026-2181
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (46.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
- Tenda Rx3 — versions 16.03.13.11
- Tenda Rx3 Firmware — versions 16.03.13.11
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/LX-66-LX/cve-new/issues/5 (issue-tracking, Exploit, exploit, Issue Tracking)
- www.tenda.com.cn/ (Product, product)
Frequently asked questions
- What is CVE-2026-2181?
- CVE-2026-2181 is a high-severity vulnerability in Tenda Rx3, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-02-08.
- How severe is CVE-2026-2181?
- High severity. CVSS v3 base score is 8.8 out of 10.