Is there a public exploit for CVE-2026-4253?

Yes. Proof-of-concept code for CVE-2026-4253 has been published publicly.

Is there a proof of concept for CVE-2026-4253?

Yes — 1 proof-of-concept entry is linked on this page, from public repositories and community submissions. They are listed for authorised testing only.

How severe is CVE-2026-4253?

CVE-2026-4253 scores CVSS 5.1 (v4.0), rated medium. EPSS puts the chance of exploitation in the next 30 days at 7.24%.

What does CVE-2026-4253 affect?

CVE-2026-4253 affects Tenda AC8.

5.1 Medium

A security flaw has been discovered in Tenda AC8 16.03.50.11.

CVE-2026-4253

A security flaw has been discovered in Tenda AC8 16.03.50.11. This affects the function routesetuserpolicyrule 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.

Proof-of-concept code is published

Public PoC

Public PoCrenzi25031469/CVE-2026-4253-Scanner

Signals come from Exploit-DB, Metasploit, Nuclei and published proof-of-concept repositories. Their absence means nothing was found, not that nothing exists.

Assessment

CVSS: 5.1 (v4.0)
Severity: Medium
EPSS: 7.24% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Public PoC
Published: 16 March 2026
Last updated: 17 June 2026
Affected: Tenda · AC8
Weakness: CWE-77, CWE-78
Assigner: cna@vuldb.com

CVSS vectorCVSS: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

At the source

References

Community proofs of concept

No community proof of concept yet. If you have one for a published vulnerability and the right to share it, add it below — it will appear here once reviewed.

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