CVE-2026-20910 Copeland XWEB and XWEB Pro OS Command Injection

High 8.0 Published Updated

Authenticated attackers can execute arbitrary OS commands via the firmware update field in Copeland XWEB devices, risking full system compromise.

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

What is CVE-2026-20910?

CVE-2026-20910 is a high-severity command injection vulnerability in Copeland XWEB 300D PRO, published on 27 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

An OS command injection vulnerability exists in XWEB Pro version 1.12.1 and prior, enabling an authenticated attacker to achieve remote code execution on the system by injecting malicious input into the devices field of the firmware update action to achieve remote code execution.

Weakness: CWE-78

Which versions are affected by CVE-2026-20910?

It affects 3 products.

Products include Copeland Xweb 300d Pro Firmware, Copeland Xweb 500b Pro Firmware, Copeland Xweb 500d Pro Firmware.

How do I fix CVE-2026-20910?

No fix has been published for CVE-2026-20910 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2026-20910 being exploited?

There is no known exploitation of CVE-2026-20910 in the wild and no public exploit code.

Sources

Also known as GHSA-6pvr-hxgm-74hg.

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