Buffer overflow in Tenda Ac5
CVE-2025-6887
A vulnerability was found in Tenda AC5 15.03.06.47 and classified as critical. Affected by this issue is some unknown functionality of the file /goform/SetSysTimeCfg. The manipulation of the argument time/timeZone leads to stack-based buff…
Vulnerability class: Buffer Overflow
EPSS: 0.016 (81.8th 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 Ac5 — versions 15.03.06.47
Weakness classification (CWE)
References
- VDB-314366 | Tenda AC5 SetSysTimeCfg stack-based overflow (vdb-entry, technical-description)
- VDB-314366 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #603788 | Tenda AC5 V1.0 V15.03.06.47 Buffer Overflow (third-party-advisory)
- Submit #603789 | Tenda AC5 V1.0 V15.03.06.47 Buffer Overflow (Duplicate) (third-party-advisory)
- lavender-bicycle-a5a.notion.site/Tenda-AC5-fromSetSysTime_time-21d53a41781f8002… (related)
- lavender-bicycle-a5a.notion.site/Tenda-AC5-fromSetSysTime_timeZone-21d53a41781f… (exploit)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2025-6887?
- CVE-2025-6887 is a high-severity vulnerability in Tenda Ac5, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2025-06-30.
- How severe is CVE-2025-6887?
- High severity. CVSS v3 base score is 8.8 out of 10.