Buffer overflow in Tenda Ac6
CVE-2025-55499
Tenda AC6 V15.03.06.23_multi was discovered to contain a buffer overflow via the ntpServer parameter in the fromSetSysTime function.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (16.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Tenda Ac6 — versions 2.0
- Tenda Ac6 Firmware — versions 15.03.06.23
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/SolitaryGrass/IoT_vuln/blob/main/tenda/AC6/AC6V2.0RTL_V15.03.06.23/f… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-55499?
- CVE-2025-55499 is a medium-severity vulnerability in Tenda Ac6, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.5/10. Published 2025-08-20.
- How severe is CVE-2025-55499?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2025-55499 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.