CVE-2026-4253

2.0 lowEPSS 7.2%

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.

Severity

CVSS 4.0

2.0 low

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

CVSS 3.1

7.2 high

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

EPSS: 7.2% chance of exploitation in the next 30 days; higher than 94% of CVEs (scores of 2026-10-31)
CWEs: CWE-78, CWE-77
Published: 2026-03-16
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

tenda:ac8_firmware

References

https://github.com/digitalandrew/tenda_ac8_v5/blob/main/poc_cmdi_config_upload.py
https://vuldb.com/?ctiid.351211
https://vuldb.com/?id.351211
https://vuldb.com/?submit.771771
https://www.tenda.com.cn/

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