CVE-2025-31355: tenda ac6_firmware Download of Code Without Integrity Check

Modified

Published 20-08-2025Last modified 03-11-2025

Vulnerability summary

CVE-2025-31355 is a critical (CVSS 9.8) Download of Code Without Integrity Check vulnerability in tenda ac6_firmware. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21.5% of scored vulnerabilities.

Overall risk

70/100

0100

High · default modelHow is this calculated?

CVSS score

9.8/10

010

Critical · v3.1 (NVD)

EPSS score

0.30%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits0No public exploits recorded

Timeline

20-08-2025
PublishedVulnerability first disclosed.
03-11-2025
Last modifiedVulnerability information updated.

Description

A firmware update vulnerability exists in the Firmware Signature Validation functionality of Tenda AC6 V5.0 V02.03.01.110. A specially crafted malicious file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.

CVSS metrics

2 scores · 2 sources · 1 version

v3.19.8

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

22%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.30% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-494Download of Code Without Integrity CheckThe product downloads source code or an executable from a remote location and executes the code without sufficiently verifying the origin and integrity of the code.

Affected systems

Tenda2 products

ac6_firmware02.03.01.110
ac6 v5.0V02.03.01.110

1 vendor · 2 products

References

2 links