CVE-2026-78802 Code injection in n/a

Critical 9.8 Published Updated

A remote attacker can execute arbitrary code on the SKYWORTH SK-WR6640X Wi-Fi router due to improper neutralization of special elements.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-78802?

CVE-2026-78802 is a critical code injection vulnerability in n/a, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue in SKYWORTH DIGITAL CO.,LTD SK-WR6640X Wi-Fi 6 Dual-Band Fiber Router (AX1800M) V1.0.3 allows a remote attacker to execute arbitrary code.

Weakness: CWE-94

Which versions are affected by CVE-2026-78802?

How do I fix CVE-2026-78802?

No fix has been published for CVE-2026-78802 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2026-78802 being exploited?

There is no known exploitation of CVE-2026-78802 in the wild and no public exploit code.

Sources

Also known as GHSA-wg49-7523-vxv3.

Is CVE-2026-78802 in your software?

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