Buffer overflow in Tenda Ac10
CVE-2026-5550
A vulnerability was identified in Tenda AC10 16.03.10.10_multi_TDE01. This affects the function fromSysToolChangePwd of the file /bin/httpd. The manipulation leads to stack-based buffer overflow. The attack may be initiated remotely. Multiple endpoints might be affected.
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 (60.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.010 · change: +0.004
Affected products
- Tenda Ac10 — versions 4.0, 16.03.10.10_multi_TDE01
- Tenda Ac10 Firmware — versions 16.03.10.10_multi_tde01
Weakness classification (CWE)
References
- vuldb.com/vuln/355314 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/355314/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/submit/782299 (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/somanyerrors/tenda-ac10v4-vulnerabilities/blob/main/findings/HIGH-01… (related, Third Party Advisory, Mitigation)
- www.tenda.com.cn/ (Product, product)
Frequently asked questions
- What is CVE-2026-5550?
- CVE-2026-5550 is a high-severity vulnerability in Tenda Ac10, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-04-05.
- How severe is CVE-2026-5550?
- High severity. CVSS v3 base score is 8.8 out of 10.