CVE-2026-4253

Tenda AC8 Web UploadCfg route_set_user_policy_rule os command injection

HIGH
7.2
CVSS Score
Published: March 16, 2026 at 05:02 PM UTC
Updated: June 17, 2026 at 10:56 AM UTC
1 product affected across 1 vendorAC8 Firmware

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Severity
HIGH7.2
Exploit prediction
EPSS 7%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/?id.351211
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/?ctiid.351211
Third Party AdvisoryExploitVDB Entry
Source: cverecord
https://vuldb.com/?submit.771771
Product
Source: cverecord
https://www.tenda.com.cn/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-78CWE-77

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