What’s Vulnerable › Vulnerabilities

CVE-2026-21389: Copeland XWEB and XWEB Pro OS Command Injection

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-27 · updated 2026-06-17
• Weakness: CWE-78

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.

Affected products

• Copeland Xweb 300D Pro Firmware: through 1.12.1
• Copeland Xweb 500B Pro Firmware: through 1.12.1
• Copeland Xweb 500D Pro Firmware: through 1.12.1

References

• https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-10.json
• https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate
• https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-10

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