What is CVE-2025-50258?

CVE-2025-50258 is a high-severity vulnerability in Tenda Ac6, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.1/10. Published 2025-07-03.

How severe is CVE-2025-50258?

High severity. CVSS v3 base score is 8.1 out of 10.

Buffer overflow in Tenda Ac6

CVE-2025-50258

Tenda AC6 v15.03.05.16_multi is vulnerable to Buffer Overflow in the SetSysTimeCfg function via the time parameter.

Vulnerability class: Buffer Overflow

Published 2025-07-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (34.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Tenda Ac6
Tenda Ac6 Firmware — versions 15.03.05.16_multi

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

github.com/faqiadegege/IoTVuln/blob/main/tendaAC6_SetSysTimeCfg_timeoverflow/de… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-50258?: CVE-2025-50258 is a high-severity vulnerability in Tenda Ac6, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.1/10. Published 2025-07-03.
How severe is CVE-2025-50258?: High severity. CVSS v3 base score is 8.1 out of 10.