VulnerabilityAnalyzed

CVE-2026-4253

The manipulation of the argument wans.policy.list1 results in os command injection.

LOW 2.0EPSS 6.97%

Does this matter?

Lower severity and a low EPSS score (6.97%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 4.0: 2.0 LOWCVSS: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/M
EPSS: 6.97% probability · 94th percentile
CISA KEV: Not listed
Weakness: CWE-77, CWE-78
Affected: tenda/ac8 firmware
Source: cna@vuldb.com

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.