Buffer overflow in Tenda Ac7
CVE-2026-4974
A flaw has been found in Tenda AC7 15.03.06.44. Affected by this issue is the function fromSetSysTime of the file /goform/SetSysTimeCfg of the component POST Request Handler. Executing a manipulation of the argument Time can lead to stack-…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (28.3th percentile) — read the EPSS interpretation.
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/E:P/RL:X/RC:R.
Affected products
- Tenda Ac7 — versions 15.03.06.44
Weakness classification (CWE)
References
- VDB-353861 | Tenda AC7 POST Request SetSysTimeCfg fromSetSysTime memory corruption (vdb-entry, technical-description)
- VDB-353861 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #778207 | Tenda AC7 AC7V1.0 V15.03.06.44 Buffer Overflow (third-party-advisory)
- lavender-bicycle-a5a.notion.site/Tenda-AC7-fromSetSysTime-32153a41781f801c95b0f… (exploit)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2026-4974?
- CVE-2026-4974 is a high-severity vulnerability in Tenda Ac7, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-03-27.
- How severe is CVE-2026-4974?
- High severity. CVSS v3 base score is 8.8 out of 10.