Deserialization in Barracuda Rmm
CVE-2025-34394
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.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000
Affected products
- Barracuda Rmm
- Barracuda Networks Rmm — versions 2025.1
Weakness classification (CWE)
References
- download.mw-rmm.barracudamsp.com/PDF/2025.1.1/RN_BRMM_2025.1.1_EN.pdf (vendor-advisory, Release Notes, patch)
- www.barracuda.com/products/msp/network-protection/rmm (Product, product)
- www.vulncheck.com/advisories/barracuda-rmm-service-center-net-remoting-deserial… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2025-34394?
- CVE-2025-34394 is a critical-severity vulnerability in Barracuda Rmm, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-12-10.
- How severe is CVE-2025-34394?
- Critical severity. CVSS v3 base score is 9.8 out of 10.