Vulnerability · Published Mar 23, 2026 · Assigned by VulDB
CVE-2026-4567Tenda A15 UploadCfg stack-based overflow
Critical 9.8
In plain English
A critical-severity stack buffer overflow in A15 from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 3.8% (higher than 90% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
A vulnerability has been found in Tenda A15 15.13.07.13. The impacted element is the function UploadCfg of the file /cgi-bin/UploadCfg. The manipulation of the argument File leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
Affected products (as reported)
Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-352404 | Tenda A15 UploadCfg stack-based overflow vdb-entry, technical-description
- VDB-352404 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #775156 | Tenda A15 V15.13.07.13 Stack-based Buffer Overflow third-party-advisory
- https://github.com/942384053/cve/issues/3 issue-tracking
- https://github.com/user-attachments/files/25824036/Tenda.A15.V15.13.07.13.Unauthenticated.Stack-based.Buffer.Overflow.in._cgi-bin_UploadCfg.zip exploit
- https://www.tenda.com.cn/ product