Buffer overflow in Tenda Ac6

CVE-2025-55503

Tenda AC6 V15.03.06.23_multi has a stack overflow vulnerability via the deviceName parameter in the saveParentControlInfo function.

Vulnerability class: Buffer Overflow

EPSS: 0.003 (19.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

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

Weakness classification (CWE)

CWE-121 — Stack-based 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-2025-55503?: CVE-2025-55503 is a high-severity vulnerability in Tenda Ac6, classified under Stack-based Buffer Overflow. CVSS score: 7.3/10. Published 2025-08-20.
How severe is CVE-2025-55503?: High severity. CVSS v3 base score is 7.3 out of 10.
Is CVE-2025-55503 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.