Buffer overflow in Tenda Ac15
CVE-2026-5830
A vulnerability was identified in Tenda AC15 15.03.05.18. This affects the function websGetVar of the file /goform/SysToolChangePwd. Such manipulation of the argument oldPwd/newPwd/cfmPwd leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used.
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: 0.010 (61.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 61st percentile — 61.3% 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: 0.010 · change: +0.004
Affected products
- Tenda Ac15 — versions 15.03.05.18
- Tenda Ac15 Firmware — versions 15.03.05.18
Weakness classification (CWE)
References
- vuldb.com/vuln/356277 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/356277/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/submit/789178 (VDB Entry, Third Party Advisory, third-party-advisory)
- files.catbox.moe/xrk8jb.zip (Exploit, exploit)
- www.tenda.com.cn/ (Product, product)
Frequently asked questions
- What is CVE-2026-5830?
- CVE-2026-5830 is a high-severity vulnerability in Tenda Ac15, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-04-09.
- How severe is CVE-2026-5830?
- High severity. CVSS v3 base score is 8.8 out of 10.