How severe is CVE-2025-34395?

CVE-2025-34395 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-34395 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-34395?

CVE-2025-34395 affects Barracuda Rmm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-34395?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-34395 have an EU (EUVD) identifier?

Yes. CVE-2025-34395 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202434.

When was CVE-2025-34395 published?

CVE-2025-34395 was published on 2025-12-10 and last updated on 2026-06-17.

CVE-2025-34395

CVE-2025-34395 is a high-severity vulnerability in Barracuda Rmm with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-202434
Weakness: CWE-22
Affected product: Barracuda Rmm
Published: 2025-12-10
Last modified: 2026-06-17

Description

Barracuda Service Center, as implemented in the RMM solution, in versions prior to 2025.1.1, exposes a .NET Remoting service in which an unauthenticated attacker can invoke a method vulnerable to path traversal to read arbitrary files. This vulnerability can be escalated to remote code execution by retrieving the .NET machine keys.

Frequently asked questions

What is CVE-2025-34395?: Barracuda Service Center, as implemented in the RMM solution, in versions prior to 2025.1.1, exposes a .NET Remoting service in which an unauthenticated attacker can invoke a method vulnerable to path traversal to read arbitrary files. This vulnerability can be escalated to remote code execution by retrieving the .NET machine keys.
How severe is CVE-2025-34395?: CVE-2025-34395 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-34395 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-34395?: CVE-2025-34395 affects Barracuda Rmm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-34395?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-34395 have an EU (EUVD) identifier?: Yes. CVE-2025-34395 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202434.
When was CVE-2025-34395 published?: CVE-2025-34395 was published on 2025-12-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:barracuda:rmm:*:*:*:*:*:*:*:*

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CVE-2025-34394 — Critical (CVSS 9.8): Barracuda Service Center, as implemented in the RMM solution, in versions prior to 2025.1.1, exposes a .NET Remoting…
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