CVE-2026-21389
High
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 request body sent to the contacts import route.
SeverityHigh
CVSS8.0
Exploit probability—
ProductCopeland Xweb 300d Pro Firmware
PublishedFeb 27, 2026
First seenFeb 27, 2026
Weakness typeCWE-78OS command injection
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| copeland xweb_300d_pro_firmware | v ≤ 1.12.1 | — |
| copeland xweb_500d_pro_firmware | v ≤ 1.12.1 | — |
| copeland xweb_500b_pro_firmware | v ≤ 1.12.1 | — |
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