CVE-2026-4253

Name: CVE-2026-4253
Creator: NVD / NIST
Published: 2026-03-16T18:16:10.54+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 2/10EPSS 6.53%

Last modified Jun 17, 2026

CVE-2026-4253 is a low-severity vulnerability rated 2/10 on the CVSS scale. A security flaw has been discovered in Tenda AC8 16.03.50.11. This affects the function route_set_user_policy_rule of the file /cgi-bin/UploadCfg of the component Web Interface. EPSS estimates a 6.53% chance of exploitation in the next 30 days.

Description

A security flaw has been discovered in Tenda AC8 16.03.50.11. This affects the function route_set_user_policy_rule of the file /cgi-bin/UploadCfg of the component Web Interface. The manipulation of the argument wans.policy.list1 results in os command injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.

Metrics

CVSS 3.1

7.2/10

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

CVSS 4.0

2/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/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

6.53%

92.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Tenda	Ac8 Firmware	16.03.50.11

References

https://github.com/digitalandrew/tenda_ac8_v5/blob/main/poc_cmdi_config_upload.pyExploit
https://vuldb.com/?ctiid.351211Permissions Required, VDB Entry
https://vuldb.com/?id.351211Third Party Advisory, VDB Entry
https://vuldb.com/?submit.771771Exploit, Third Party Advisory, VDB Entry
https://www.tenda.com.cn/Product

Timeline

Published: Mar 16, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-4253?

How severe is CVE-2026-4253?

CVE-2026-4253 has a CVSS score of 2/10 (LOW severity). The EPSS model estimates a 6.53% probability of exploitation in the next 30 days.

How do I fix CVE-2026-4253?

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-2026-4253?

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

Scan your code now

Source: NVD / NIST