CVE-2026-20902
Published: 27 February 2026
Summary
CVE-2026-20902 is a high-severity OS Command Injection (CWE-78) vulnerability in Copeland Xweb 300D Pro Firmware. Its CVSS base score is 8.0 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 29.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2026-20902 is an OS command injection vulnerability (CWE-78) present in XWEB Pro version 1.12.1 and prior versions. The issue allows malicious input to be injected into the map filename field during the map upload action within the parameters route, potentially leading to remote code execution on the affected system. Published on 2026-02-27, it carries a CVSS v3.1 base score of 8.0 (AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H).
An authenticated attacker with high privileges (PR:H) can exploit this vulnerability remotely over the network (AV:N), though it requires high attack complexity (AC:H) and involves no user interaction (UI:N). Exploitation changes the scope (S:C) and enables high-impact remote code execution, compromising confidentiality, integrity, and availability (C:H/I:H/A:H) on the target system.
CISA's ICS Advisory ICSA-26-057-10 and the associated CSAF document detail the vulnerability, while the vendor's system software update page at webapps.copeland.com provides relevant mitigation information, including patches for affected XWEB Pro versions.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-8944
Vulnerability details
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 map filename field during the map upload action of…
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the parameters route.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
OS command injection vulnerability in a web application's map upload feature (parameters route) allows remote code execution, directly mapping to T1190: Exploit Public-Facing Application.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly prevents OS command injection by requiring validation of malicious inputs in the map filename field during upload.
Mitigates the vulnerability through timely flaw remediation via vendor patches for affected XWEB Pro versions.
Enforces restrictions on filename inputs to block malicious payloads that enable command injection in the parameters route.