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.

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

EPSS: 0.003 (18.1th percentile) — read the EPSS interpretation.

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.

Affected products

Tenda Ac6 — versions 2.0
Tenda Ac6_firmware — versions 15.03.06.23
N/a — versions n/a

Weakness classification (CWE)

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

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

cve@mitre.org (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.