Security readout for executives and security teams
Plain-English summary
CVE-2026-20764 is a high-severity command injection flaw in Copeland XWEB Pro 1.12.1 and earlier. A highly privileged authenticated user could place malicious input in the device hostname configuration, leading to remote code execution during later setup processing.
Executive priority
Treat this as a high-priority industrial device issue where XWEB Pro is deployed. The business risk is serious because successful exploitation can enable remote code execution, but urgency is tempered by the need for high privileges and no cited evidence of active exploitation.
Technical view
The issue is CWE-78 OS command injection. The CVSS 3.1 score is 8.0, with network access, high attack complexity, high privileges required, no user interaction, changed scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Organizations using Copeland XWEB Pro version 1.12.1 or earlier should investigate exposure. The source bundle references Copeland XWEB 300D PRO, 500D PRO, and 500B PRO, but version details in the provided affected-product data are incomplete.
Exploitation context
The cited sources do not indicate active exploitation, and this CVE is not listed as CISA KEV in the provided data. Exploitation requires an authenticated attacker with high privileges and malicious hostname configuration input that is later processed during setup.
Researcher notes
Evidence supports command injection through hostname configuration, but public details in the provided bundle are limited. Do not assume exploit availability or affected versions beyond XWEB Pro 1.12.1 and earlier. The affected-product version data appears incomplete and should be reconciled with Copeland and CISA advisories.
Mitigation direction
- Check Copeland’s software update page for affected-device firmware or software guidance.
- Review CISA ICSA-26-057-10 for vendor-recommended mitigations and operational precautions.
- Restrict administrative access to XWEB Pro devices to trusted personnel only.
- Avoid exposing management interfaces to untrusted networks.
- Prioritize updates or compensating controls for internet-reachable or safety-critical deployments.
Validation and detection
- Inventory Copeland XWEB Pro devices and record software versions.
- Identify devices running XWEB Pro 1.12.1 or earlier.
- Confirm whether XWEB 300D PRO, 500D PRO, or 500B PRO are deployed.
- Review administrative access logs for unexpected hostname configuration changes.
- Verify update status against Copeland and CISA guidance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-20764 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H1.36Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8HighVector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.