An input validation flaw in the 'ate' service of Tenda AC10 v4.0 firmware v16.03.10.09_multi_TDE01 to escalate privileges to root via a cra…

published 2025-08-28 last yr. modified 2026-09-26 last mo. also EUVD-2025-26135

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits: 0; none known

An input validation flaw in the 'ate' service of Tenda AC10 v4.0 firmware v16.03.10.09_multi_TDE01 to escalate privileges to root via a crafted UDP packet.

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CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: last yr. (2025-08-28)

Exploit prediction

0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Classification

Weakness

CWE-20 Improper Input Validation

References

plaid-knot-11b.notion.site /Unauthenticated-Remote-Root-Shell-via-Input-Validation-Flaw-in-ate-Service-on-Tenda-AC10-V4-0-23fb3e9cce32804
third-party-advisory

Sources

CVE List CVE-2025-57220
NVD CVE-2025-57220

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.