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CVE-2025-34394

30
FAUCET Score

CVE-2025-34394 is a critical remote code execution vulnerability affecting Barracuda RMM versions prior to 2025.1.1. It stems from insufficient protection against deserialization of arbitrary types within the .NET Remoting service of the Barracuda Service Center. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with low attack complexity and no user interaction, potentially leading to complete compromise of confidentiality, integrity, and availability. While the FAUCET Risk Score is high at 92/100, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2025.1.1CPE matchmatch criteria
cpe:2.3:a:barracuda:rmm:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

10.0CRITICAL

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
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
HIGH
SS Integrity
HIGH
SS Availability
HIGH
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.60%
Probability of exploitation in next 30 days
EPSS Percentile
45.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0060 is in the 26th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

download.mw-rmm.barracudamsp.com / PDF/2025.1.1/RN_BRMM_2025.1.1_EN.pdf
Release Notes
barracuda.com / products/msp/network-protection/rmm
Product
vulncheck.com / advisories/barracuda-rmm-service-center-net-remoting-deserialization-rce
Third Party Advisory