Is CVE-2025-34394 actively exploited?

CVE-2025-34394 has no public evidence of in-the-wild exploitation as of 2025-12-23.

What is the CVSS score for CVE-2025-34394?

CVE-2025-34394 has a CVSS score of 10 (CRITICAL severity). Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.

How do I patch CVE-2025-34394?

Patch guidance is available from barracuda security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-34394.

Fix CVE-2025-34394 - CRITICAL barracuda rmm

Description

Barracuda Service Center, as implemented in the RMM solution, in versions prior to 2025.1.1, exposes a .NET Remoting service that is insufficiently protected against deserialization of arbitrary types. This can lead to remote code execution.

CVSS Metrics

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Confidentiality: undefined
Integrity: undefined
Availability: undefined
Weaknesses: CWE-502 · Insecure Deserialization

Metadata

Primary Vendor: BARRACUDA
Published: 12/10/2025
Last Modified: 12/23/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2025-34394

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary