What is the CVSS score of CVE-2026-3037?

CVE-2026-3037 has a CVSS 3.1 base score of 8.0 (High). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Xweb 300d Pro Firmware are affected by CVE-2026-3037?

XWEB Pro versions 1.12.1 and earlier contain a critical command injection vulnerability that allows authenticated users to execute arbitrary code on affected systems.

How to fix or mitigate CVE-2026-3037?

Within 24 hours: Identify all systems running XWEB Pro 1.12.1 or earlier and document their inventory and criticality level. Within 7 days: Implement network segmentation to restrict access to XWEB Pro administrative interfaces and disable the MBird SMS service if not actively required. Within 30 days: Contact XWEB vendor for patch availability timeline; if unavailable, evaluate alternative solutions or plan system decommissioning. Monitor vendor security advisories daily for patch release.

Xweb 300d Pro Firmware CVE-2026-3037

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

8.0

CVSS 3.1 · NVD

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

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

High

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

CVE Published

Feb 27, 2026 - 02:16 nvd

HIGH 8.0

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 modifying malicious input injected into the MBird SMS service URL and/or code via the utility route which is later processed during system setup, leading to remote code execution.

AnalysisAI

Remote code execution in XWEB Pro firmware (versions 1.12.1 and earlier) allows authenticated attackers to execute arbitrary OS commands by injecting malicious payloads into the MBird SMS service URL parameters processed during system setup. The vulnerability affects Xweb 500d Pro, 500b Pro, and 300d Pro models, with no patch currently available. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Authenticate as high-privilege user

Delivery

Access utility route in XWEB Pro

Exploit

Inject malicious OS commands into MBird SMS service URL parameter

Execution

System processes input during setup

Impact

Execute arbitrary commands with elevated privileges

Access

Authenticate as high-privilege user

Delivery

Access utility route in XWEB Pro

Exploit

Inject malicious OS commands into MBird SMS service URL parameter

Execution

System processes input during setup

Impact

Execute arbitrary commands with elevated privileges

Vulnerability AssessmentAI

Exploitation	Authenticated access to XWEB Pro version 1.12.1 or prior with high-privilege account credentials. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 8.0 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A remote attacker (requires authentication) could exploit this flaw, remote code execution.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.