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Xweb 300d Pro Firmware CVE-2026-25195

HIGH
OS Command Injection (CWE-78)
2026-02-27 ics-cert@hq.dhs.gov
RCE Command Injection Xweb 300d Pro Firmware Xweb 500b Pro Firmware Xweb 500d Pro Firmware Copeland
8.0
CVSS 3.1 · NVD
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Authenticate to XWEB Pro
  2. Exploit
    Craft malicious firmware file with OS commands
  3. Execution
    Upload via firmware update route
  4. Impact
    Execute injected commands as system user

Vulnerability Assessment

Weakness
CWE
CWE-78
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization OS command sanitization, avoid shell exec
MITRE ATT&CK

2 techniques across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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Exploitation Conditions

Authenticated administrative access to XWEB Pro version 1.12.1 or prior; firmware update functionality must be accessible; system must process firmware files without sanitizing embedded OS commands.
Impact

CVSS 8.0 (HIGH). Attack vector: Network. Complexity: High. Privileges required: High. User interaction: None. Exploitation requires authentication. Exploitable via remote/network.
Exploit ScenarioDerived

A remote attacker (requires authentication) could exploit this vulnerability to compromise the affected system.
This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Remote code execution in XWEB Pro firmware versions 1.12.1 and earlier allows authenticated attackers to execute arbitrary OS commands by submitting a malicious firmware update file through the update mechanism. The vulnerability affects multiple XWEB Pro models (300d, 500d, and 500b) and requires high-level privileges to exploit. No patch is currently available for this high-severity command injection flaw (CVSS 8.0).

Earlier versions of this analysis (1)
v1 Mar 12, 2026 - 21:55 CVSS 8.0

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 supplying a crafted firmware update file via the firmware update route. [CVSS 8.0 HIGH]

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

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Technical ContextAI · show details

Classified as CWE-78 (OS Command Injection). Affects Xweb 300D Pro Firmware. 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 supplying a crafted firmware update file via the firmware update route.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 8.0 HIGH
AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

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 supplying a crafted firmware update file via the firmware update route.

Executive ViewAI

Why It Matters

A critical vulnerability in XWEB Pro versions 1.12.1 and earlier allows authenticated users to execute arbitrary commands on affected systems through malicious firmware updates, potentially compromising system integrity and data security. Organizations running this software face immediate risk of unauthorized access and system takeover until mitigation measures are implemented.

Business Impact: High
Compensating Controls

Disable the firmware update feature in XWEB Pro if not actively required for operations; implement network access controls restricting firmware update endpoints to authorized administrative networks only; deploy Web Application Firewall (WAF) rules to detect and block suspicious firmware update requests; conduct enhanced logging and monitoring of all firmware update activities; enforce multi-factor authentication for all administrative accounts with firmware update privileges.

Threat Intelligence Overview

EPSS Score
0.3%
Top 48% exploitable
Data Quality
4 sources
Confidence: Medium
NVD CVE.org EPSS GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
High

Priority Score

40
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +40
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

OS Command Injection CRITICAL

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)CVE.org

cpe:2.3:o:copeland:xweb_300d_pro_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:copeland:xweb_500b_pro_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:copeland:xweb_500d_pro_firmware:*:*:*:*:*:*:*:*

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Remote code execution in XWEB Pro firmware (versions 1.12.1 and earlier) allows authenticated attackers to execute arbit
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CVE-2026-20910 HIGH
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Remote code execution in XWEB Pro firmware versions 1.12.1 and earlier allows authenticated attackers to execute arbitra
CVE-2026-20902 HIGH
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Remote code execution in Xweb 300d Pro, 500b Pro, and 500d Pro firmware (version 1.12.1 and prior) allows authenticated

CVE-2026-20742 HIGH
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Remote code execution in XWEB Pro firmware versions 1.12.1 and earlier allows authenticated attackers to execute arbitra

Same weakness CWE-78 – OS Command Injection

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References

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

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