CVE-2025-9091

Name: CVE-2025-9091
Creator: NVD / NIST
Published: 2025-08-17T03:15:27.65+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 1.1/10EPSS 0.20%

Last modified Jun 17, 2026

CVE-2025-9091 is a low-severity vulnerability rated 1.1/10 on the CVSS scale. A security flaw has been discovered in Tenda AC20 16.03.08.12. Affected by this vulnerability is an unknown functionality of the file /etc_ro/shadow. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

Description

A security flaw has been discovered in Tenda AC20 16.03.08.12. Affected by this vulnerability is an unknown functionality of the file /etc_ro/shadow. The manipulation leads to hard-coded credentials. It is possible to launch the attack on the local host. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

1.1/10

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.20%

10.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Tenda	Ac20 Firmware	16.03.08.12

References

https://github.com/ZZ2266/.github.io/blob/main/AC20/hardcoded%20password/readme.md#descriptionExploit, Third Party Advisory
https://github.com/ZZ2266/.github.io/tree/main/AC20/hardcoded%20password/readme.mdExploit, Third Party Advisory
https://vuldb.com/?ctiid.320359Permissions Required, VDB Entry
https://vuldb.com/?id.320359Third Party Advisory, VDB Entry
https://vuldb.com/?submit.632268Third Party Advisory, VDB Entry
https://www.tenda.com.cn/Product
https://github.com/ZZ2266/.github.io/blob/main/AC20/hardcoded%20password/readme.mdExploit, Third Party Advisory
https://github.com/ZZ2266/.github.io/blob/main/AC20/hardcoded%20password/readme.md#descriptionExploit, Third Party Advisory

Timeline

Published: Aug 17, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-9091?

How severe is CVE-2025-9091?

CVE-2025-9091 has a CVSS score of 1.1/10 (LOW severity). The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.

How do I fix CVE-2025-9091?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-9091?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST