What is the CVSS score of CVE-2026-24517?

CVE-2026-24517 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: 0.3%.

Which versions of Xweb 300d Pro Firmware are affected by CVE-2026-24517?

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

How to fix or mitigate CVE-2026-24517?

Within 24 hours: Inventory all XWEB Pro installations and identify systems running version 1.12.1 or earlier; isolate or restrict network access to firmware update endpoints. Within 7 days: Implement compensating controls including WAF rules to block malicious firmware update requests and enforce strict authentication on update routes; review access logs for suspicious activity. Within 30 days: Contact vendor for patch availability; develop and test upgrade plan; prioritize patching based on system criticality and exposure.

Xweb 300d Pro Firmware CVE-2026-24517

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 - 01:16 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 injecting malicious input into requests sent to the firmware update route.

AnalysisAI

Remote code execution in Xweb 300d/500b/500d Pro firmware versions 1.12.1 and earlier allows authenticated attackers to execute arbitrary OS commands by injecting malicious input into the firmware update endpoint. The vulnerability stems from insufficient input validation in command processing and requires high privileges but affects the entire system scope. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Authenticate to XWEB Pro

Exploit

Send crafted request to firmware update route

Execution

Inject OS commands into input parameters

Impact

Execute arbitrary commands with system privileges

Access

Authenticate to XWEB Pro

Exploit

Send crafted request to firmware update route

Execution

Inject OS commands into input parameters

Impact

Execute arbitrary commands with system privileges

Vulnerability AssessmentAI

Exploitation	XWEB Pro version 1.12.1 or earlier with firmware update route enabled. … 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 vulnerability to compromise the affected system.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Inventory all XWEB Pro installations and identify systems running version 1.12.1 or earlier; isolate or restrict network access to firmware update endpoints. …

Threat intelligence, references, and detailed analysis are available after sign-in.