How severe is CVE-2024-42455?

CVE-2024-42455 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2024-42455 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-42455?

CVE-2024-42455 affects Veeam Veeam Backup & Replication. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-42455?

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-2024-42455 have an EU (EUVD) identifier?

Yes. CVE-2024-42455 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39889.

When was CVE-2024-42455 published?

CVE-2024-42455 was published on 2024-12-04 and last updated on 2026-06-17.

CVE-2024-42455

CVE-2024-42455 is a high-severity vulnerability in Veeam Veeam Backup & Replication with a CVSS 3.x base score of 8.1. Its EPSS exploit-prediction score of 14% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-306.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 14% (96th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-39889
Weakness: CWE-306
Affected product: Veeam Veeam Backup & Replication
Published: 2024-12-04
Last modified: 2026-06-17

Description

A vulnerability in Veeam Backup & Replication allows a low-privileged user to connect to remoting services and exploit insecure deserialization by sending a serialized temporary file collection. This exploit allows the attacker to delete any file on the system with service account privileges. The vulnerability is caused by an insufficient blacklist during the deserialization process.

Frequently asked questions

What is CVE-2024-42455?: A vulnerability in Veeam Backup & Replication allows a low-privileged user to connect to remoting services and exploit insecure deserialization by sending a serialized temporary file collection. This exploit allows the attacker to delete any file on the system with service account privileges. The vulnerability is caused by an insufficient blacklist during the deserialization process.
How severe is CVE-2024-42455?: CVE-2024-42455 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2024-42455 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-42455?: CVE-2024-42455 affects Veeam Veeam Backup & Replication. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-42455?: 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-2024-42455 have an EU (EUVD) identifier?: Yes. CVE-2024-42455 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39889.
When was CVE-2024-42455 published?: CVE-2024-42455 was published on 2024-12-04 and last updated on 2026-06-17.

References

https://www.veeam.com/kb4693

Affected products (1)

cpe:2.3:a:veeam:veeam_backup_\&_replication:*:*:*:*:*:*:*:*

More vulnerabilities in Veeam Veeam Backup & Replication

CVE-2026-21708 — Critical (CVSS 9.9): A vulnerability allowing a Backup Viewer to perform remote code execution (RCE) as the postgres user.
CVE-2026-21669 — Critical (CVSS 9.9): A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.
CVE-2026-21667 — Critical (CVSS 9.9): A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.
CVE-2026-21666 — Critical (CVSS 9.9): A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.
CVE-2025-48983 — Critical (CVSS 9.9): A vulnerability in the Mount service of Veeam Backup & Replication, which allows for remote code execution (RCE) on the…
CVE-2024-40711 — Critical (CVSS 9.8): A deserialization of untrusted data vulnerability with a malicious payload can allow an unauthenticated remote code…

All CVEs affecting Veeam Veeam Backup & Replication →

Other CWE-306 (Missing Authentication for Critical Function) vulnerabilities

CVE-2026-54309 — Critical (CVSS 10.0): n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, when @n8n/mcp-browser is run in HTTP…
CVE-2026-50242 — Critical (CVSS 10.0): In JetBrains Hub before 2026.1.13757, 2025.3.148033, 2025.2.148048, 2025.1.148120, 2024.3.148430, 2024.2.148429…
CVE-2026-49257 — Critical (CVSS 10.0): mcp-pinot is a Python-based Model Context Protocol (MCP) server for interacting with Apache Pinot. In versions 3.0.1…
CVE-2026-46846 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Security Framework).…
CVE-2026-46803 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Security Framework).…
CVE-2026-46800 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites).…

Browse all CWE-306 (Missing Authentication for Critical Function) vulnerabilities →