What is CVE-2025-27129?

CVE-2025-27129 is a critical-severity vulnerability in Tenda Ac6 V5.0, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 9.8/10. Published 2025-08-20.

How severe is CVE-2025-27129?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2025-27129 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Tenda Ac6 V5.0

CVE-2025-27129

An authentication bypass vulnerability exists in the HTTP authentication functionality of Tenda AC6 V5.0 V02.03.01.110. A specially crafted HTTP request can lead to arbitrary code execution. An attacker can send packets to trigger this vul…

EPSS: 0.002 (40.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Tenda Ac6 V5.0 — versions V02.03.01.110

Weakness classification (CWE)

CWE-288 — Authentication Bypass Using an Alternate Path or Channel

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

https://talosintelligence.com/vulnerability_reports/TALOS-2025-2165

Frequently asked questions

What is CVE-2025-27129?: CVE-2025-27129 is a critical-severity vulnerability in Tenda Ac6 V5.0, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 9.8/10. Published 2025-08-20.
How severe is CVE-2025-27129?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-27129 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.