VDB-335605 · CVE-2025-34394 · EUVD-2025-202445

Barracuda RMM prior 2025.1.1 Service Center deserialization

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.6	$0-$5k	0.00

Summaryinfo

A vulnerability marked as very critical has been reported in Barracuda RMM. The affected element is an unknown function of the component Service Center. This manipulation causes deserialization. This vulnerability is registered as CVE-2025-34394. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Barracuda RMM and classified as very critical. Affected by this vulnerability is an unknown code of the component Service Center. The manipulation with an unknown input leads to a deserialization vulnerability. The CWE definition for the vulnerability is CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was published by Piotr Bazydlo. The advisory is shared at download.mw-rmm.barracudamsp.com. This vulnerability is known as CVE-2025-34394 since 04/15/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/23/2025).

Upgrading to version 2025.1.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-202445). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Barracuda

Name

License

commercial

Website

Vendor: https://www.barracuda.com/

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: RMM 2025.1.1

Timelineinfo

04/15/2025 CVE reserved
12/10/2025 +239 days Advisory disclosed
12/10/2025 +0 days VulDB entry created
12/23/2025 +13 days VulDB entry last update

Sourcesinfo

Vendor: barracuda.com

Advisory: download.mw-rmm.barracudamsp.com
Researcher: Piotr Bazydlo
Status: Confirmed

CVE: CVE-2025-34394 (🔒)
GCVE (CVE): GCVE-0-2025-34394
GCVE (VulDB): GCVE-100-335605
EUVD: 🔒

Entryinfo

Created: 12/10/2025 17:25
Updated: 12/23/2025 18:20
Changes: 12/10/2025 17:25 (66), 12/23/2025 15:55 (10), 12/23/2025 18:20 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.