What is CVE-2025-28221?

CVE-2025-28221 is a high-severity vulnerability in Tenda W6-S, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2025-03-28.

How severe is CVE-2025-28221?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Tenda W6-S

CVE-2025-28221

Tenda W6_S v1.0.0.4_510 has a Buffer Overflow vulnerability in the set_local_time function, which allows remote attackers to cause web server crash via parameter time passed to the binary through a POST request.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (36.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Tenda W6-s
Tenda W6-s_firmware — versions 1.0.0.4\(510\)
N/a — versions n/a

Weakness classification (CWE)

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

References

cve@mitre.org (Broken Link)

Frequently asked questions

What is CVE-2025-28221?: CVE-2025-28221 is a high-severity vulnerability in Tenda W6-S, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2025-03-28.
How severe is CVE-2025-28221?: High severity. CVSS v3 base score is 7.5 out of 10.